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 Network Addon Mod (NAM) Version 40 by the NAM Team

Before you run off in excitement to install the new NAM version, please make sure to read this (short) document first, to ensure the best Network Addon Mod experience. Note that without the 4GB Patch being properly installed, the game will crash to desktop.

REQUIREMENTS

Note that the NTCore 4GB Patch is REQUIRED if you are running the Full NAM Controller ("4GB Full" options in the installer), which is required to use the RealHighway (RHW) system. If the installation procedure is begun via NetworkAddonMod_Setup_Version40.bat, as is the new recommended procedure, the 4GB Patch should be automatically applied to the game. Otherwise, the patch can be found inside the download, or downloaded directly from NTCore here, where further instructions on use of the patch can be found. Also due to this installer change, the NAM Controller Compiler is no longer run as part of the installation process. Users will have an option to install one of two pre-built NAM Controller options, the Full "4GB" option, which has a substantial size and requires the 4GB Patch and a 64-bit operating system, or a "Low RAM/No RHW" version that does not require the 4GB Patch, and does not include the code for the RealHighway (RHW) system, the most expansive fetaure in the mod. The "Low RAM/No RHW" version should be used by those with 32-bit operating systems (i.e. Windows XP), less than 4GB RAM, and/or by those not using the RHW. Users wishing for further customization of NAM Controller size can still run the Controller Compiler manually, as it is available in the download.

Users wishing to simply use the NAM's Traffic Simulator improvements should skip the main NAM Installation and instead load up the Traffic Simulator Configuration Tool (TSCT), which is in the folder of the same name. The tool itself is "TSCT.jar", though may be easier to open using the batch file ("TSCT.bat"). Note that the TSCT also requires the Java Runtime Environment.

The NAM is also now using a Java-based installer, designed by daeley, which is cross-platform (meaning no more separate Mac versions, and Linux support without WINE). As such, the Java Runtime Environment (JRE) is now REQUIRED to run the NAM installer. It was previous recommended for users wishing to utilize the NAM Traffic Simulator Configuration Tool (TSCT). A Windows 64-bit copy of OpenJDK 11 is included in the download (OpenJDK11U-jre_x64_windows_hotspot_11.0.8_10.msi). Other open source distributions of Java can be downloaded from here.

Users who fundamentally object to installing Java (or are unable to for other reasons) can perform a manual install, with patience. Details can be found here

With the new installer, the old NAM installation is no longer removed automatically, so users should manually remove the "Network Addon Mod" and "z___NAM" folders from their Plugins directory. If you use the "Cleanup" option under the "Setup" tab, it is highly recommended that you select the "Backup" option upon completion, and "Delete" will in fact delete all those files, making them unrecoverable. It is recommended, particularly with this Release Candidate, that you back those folders up in a location that is not in your Plugins folder. The "z___NAM" folder has been eliminated, and all files are now installed to the "Network Addon Mod" directory.

The RealRailway (RRW) standard for Rail is now the default and only option. One may choose to disable the RRW's more restrictive default slope settings by unselecting the "RRW Tunnel and Slope Parameters" box in the installer. The original Maxis Rail specification will be supported via a Legacy Plugin, downloaded separately, at a later date. Also note that a number of cosmetic-oriented NAM plugins, such as the El-Rail Alternate Implementation, the Bullet Train Mod, and some advanced texture options (largely deprecated) have been removed from the installer. The Alternate El-Rail and BTM will be made available separately at a later date. Please note that, much like Maxis Rail, these Plugins are effectively in "Legacy" status, and may not be actively maintained or supported by the NAM Team going forward. Both the original Maxis Highways (MHW) and the "Maxis Highway Override/Project Symphony" (MHO) remain available.

The Station Locator, Updater, and Reconstruction Project (SLURP) is also no longer handled by the new installer. A scaled down version of the old installer will be made at a later date to handle SLURP routines. Users wishing to retain SLURPed stations should retrieve them from the "z___NAM\Mass Transit Lots\Station Overrides" folder in their existing NAM installation, where they will be found in the "Mass Transit Lots" subfolder. Note that users running the 64-bit version of SimCity 4 on macOS may wish to refrain from retrieving SLURP stations, as there have been some encoding issues with stations that cause that version of the game to CTD.

The new installer also no longer performs a version check. Please note, however, that for Windows users, Version 1.1.638 and above are still required, as Versions 1.1.610 and 1.1.613 have notable instabilities that may have a significant negative impact on the use of this mod. Copies purchased from the Origin Store may still not meet this requirement, and support will not be offered to users with "unofficial" copies of the game.

New Features for NAM 40

  • The installation package has been refined to minimize the potential for Windows users failing to properly install the 4GB Patch and having the game crash to desktop (CTD) as a result--the #1 tech support issue with recent NAM releases. A new batch file has been introduced to automate the process of applying the 4GB Patch to the game's executable (special thanks to CorinaMarie), and installation options for "Low RAM/No RHW" versions of the NAM Controller have been added for users who on Windows XP and other 32-bit operating systems, and/or have less than 4GB RAM. (The Mac version, being 64-bit, does not require the 4GB Patch.)
  • Draggable Slip Lanes are now possible at Orthogonal x Diagonal (OxD) intersections involving base Streets, Roads, One-Way Roads, and Avenues. Simply drag the One-Way Road tool between the intersecting networks at the appropriate corner to make the connection.
  • About 40 new ramp interfaces have been added to the RealHighway (RHW) system, including Diagonal Type A1 and B1 ramps for all ground networks, Diagonal Type D1 and E1 for the L0 RHW-2, RHW-3, RHW-4, RHW-6S, RHW-8S, RHW-8C, and RHW-10S, along with Orthogonal Type D1 and E1 ramps for the L0 RHW-3. Additionally, the D1 and E1 ramps have been rebased from RHW-4 to RHW-3, improving override stability in the process.
  • The new Subway-based FLUPs system has been expanded to include entrance/exit portals for the RHW-3 and RHW-4 networks, along with underground ramp interfaces for all present networks. Additionally, some path jumping issues with certain NWM overrides of the FLEX Overcrossing Pieces (FLEX-OCPs) have been corrected.
  • Small 90 Curve (2x2) support has been expanded. The Road Small 90 can now accept overrides from the Road-based Network Widening Mod (NWM) networks (TLA-3, AVE-2, ARD-3, and NRD-4), and One-Way Road Small 90 Curves are now supported as well, which allow overrides from the NWM's OWR-1 and OWR-3.
  • It is now possible to build Diverters for Road, Street, and (same type) SAM +-intersections, allowing one to divert thru traffic and convert the intersections into pairs of Small 90 Wide Radius Curves, while still allowing Pedestrian usage. For instructions on the build process, please consult the Base Features Guide in the main documentation package.
  • All of the override networks included in the Network Widening Mod (NWM) can now form Orthogonal x Orthogonal (OxO) + and T-intersections with Street Addon Mod (SAM) Sets 2 through 11.
  • The Auto-Destruct Hole Diggers and Raisers have been expanded to include smaller increments--0.1 meters, 0.5 meters, 1 meter, 2 meters, and 5 meters.
  • The Orthogonal RHW FLEX On-Slope Transitions (FLEX-OSTs) have undergone further refinement.
  • The Diagonal RHW FLEX Height Transitions (FLEX-HTs) now support overrides for higher elevations of the RHW-4 and MIS Ramp networks (L1-L2, L2-L3, and L3-L4).
  • The Network Widening Mod (NWM) is once again referred to by its original name in the installer, rather than as "Additional Widths and Turn Lanes".
  • The newer overrideable versions of the Multi-Radius Curves (MRCs) for Road now have proper Euro textures.
  • The stability of the OWR-1 override of the RIRO/LILO (Right/Left In, Right/Left Out) Slip Lanes has been improved.
  • Stability improvements have been made to the Type 220 x Type 220 T-Intersection in the FLEX Turn Lane/QuickTurn system.
  • Issues with the Single-Tile Roundabouts allowing the network to drag out the incorrect side (and not out the correct side) in Left-Hand Driving (LHD) mode have been addressed.
  • + and T-intersections involving One-Way Road-based "Boulevards" (a configuration in which two One-Way Roads are separated by a one-tile median) no longer inadvertently convert into One-Way Road Roundabouts.
  • Minor file architecture improvements have been made to prevent installation errors involving the Legacy Auto Avenue Turn Lanes and Legacy Semi-Auto Road Turning Lanes, which would lead to blank intersections and approaches at Avenue x Avenue and Road x Road intersections--the #2 tech support issue in recent NAM releases.
  • A long-standing missing texture glitch with the L1-L4 RHW-4 Type E1 ramps has been corrected.
  • An adjacency glitch involving the RHW-2 connection to the One-Way Road Roundabouts when next to a Diagonal Road connection has been addressed.
  • Various other minor stability improvements have been made to the RHW, NWM, and HRW (Hybrid Railway) RUL2 override code.

 Requirements and Compatibility

The Network Addon Mod, in its current form with default installation options, is designed to run on systems with a 64-bit operating system and more than 4GB RAM. Most modern PCs should be able to comfortably run the mod. By installing fewer options and using the Controller Compiler to manually compile a smaller NAM Controller, however, it is possible to run the NAM on 32-bit operating systems, and/or systems with 4GB or less RAM. At least 1.2GB of hard drive space is required, in order to fully unpack the installer, but actual installation size may run from as little as 1.7MB to as much as 850MB, depending on the options chosen and if one selects to manually run the Controller Compiler after installation.

The Network Addon Mod is compatible with the following versions of the game:

  • A) Retail Windows disc copies of SimCity 4 Deluxe OR SimCity 4 with the Rush Hour Expansion Pack, updated to at least Version 1.1.638.
  • B) Retail Windows digital copies of SimCity 4 Deluxe OR SimCity 4 with the Rush Hour Expansion Pack (Version 1.1.641), from all digital retailers except Origin (i.e. GOG.com, Steam, Amazon).
  • C) Digital Windows copies of SimCity 4 Deluxe obtained redeeming an existing CD key (not purchasing) through Origin Customer Support.
  • D) Retail Mac digital copies of SimCity 4 Deluxe, purchased through Steam or the App Store. (NOTE: Platform-specific technical support for the NAM on macOS is extremely limited).
  • E) Retail Mac disc copies of SimCity 4 Deluxe, running on macOS/OS X Version 10.6 (Snow Leopard) or earlier. (NOTE: Platform-specific technical support for the NAM on macOS is extremely limited.)

The Network Addon Mod is NOT compatible with the following versions of the game:

  • F) Retail disc copies of SimCity 4 Deluxe OR SimCity 4 with the Rush Hour Expansion Pack that have not been patched (Version 1.1.610 or 1.1.613).
  • G) Retail Windows digital copies of SimCity 4 Deluxe purchased from Origin.
  • H) Retail disc copies of non-Deluxe SimCity 4 (sometimes marketed later as "SimCity 4 Classic"), without the Rush Hour Expansion Pack (Version 1.0.272 or earlier)
  • I) Pirated or cracked copies of SimCity 4 Deluxe OR SimCity 4 with the Rush Hour Expansion Pack.

What should I do if the NAM installer rejects my copy of the game?

The new NAM installer (introduced with the NAM 37 Release Candidate) no longer runs a version check. However, it is strongly recommended that users check the version they are running, as unpatched copies can be unstable. In Case F, the solution is simply to install the EP1 Update 1 patch, which can be downloaded from EA (SKU 1-5), SimCity 4 Devotion (SKU 1-5), or Simtropolis (SKU 1 and 2 only). To determine the correct SKU version for your copy of SimCity 4, find the installation directory, and look in the subfolder named sku_data. Alternatively, one can simply try all the SKU versions of the patch, until one works.

For Case G, see the section about Origin below.

For Cases H, I, and J, it is recommended that you purchase a digital copy of SimCity 4 Deluxe (NOT from Origin).

What if my disc copy has simply stopped working with Windows Vista, 7, 8, 8.1, or 10?

Microsoft decided in 2015 that secdrv.sys, the driver file used by the SafeDisc and other disc copy protection systems present in many PC games from the early 2000s, was a security threat. As a result, the driver was not included as part of Windows 10, and Microsoft issued a Windows Update, KB3086255, which disables secdrv.sys on Windows Vista, 7, 8, and 8.1. In the case of the older versions of Windows, secdrv.sys can be re-enabled when needed through the use of the command prompt or a batch file.

Aside from the advanced step of manually signing a device driver for Windows 10, the only viable courses of action are to either purchase a retail digital copy of the game (NOT from Origin), or to redeem your CD key at no cost via Origin Customer Support (which, unlike purchasing from Origin, will result in you receiving a properly-patched version of SimCity 4 Deluxe).

Note that cracked executables (i.e. a "No CD" .exe) are not eligible for tech support. The NAM Team does not support piracy, but understands the frustration with the game's original DRM system being blocked by Microsoft, forcing one to buy a new digital copy in order to continue playing. However, the reason why cracked executables are not eligible is for more practical reasons, namely the potential for version mismatches (i.e. a Version 1.1.638 crack with Version 1.1.610/613 .DAT files, or vice-versa), which can greatly complicate the team's efforts to provide useful technical support to users. The Origin issues played a role in our keeping the version check in place, until the recent installer change in 2020.

Please note that if you are attempting to use an older, 32-bit version of Windows (i.e. Windows XP) in order to still run your disc game, this will substantially hamper the performance of the game with the full NAM installed, and it is highly recommended that you run the game on a 64-bit operating system. If you must run on a 32-bit OS, you will need to either select one of the "Low RAM/No RHW" NAM Controller options, or manually run the Controller Compiler and install a smaller feature set. (The RealHighway (RHW) system is by far the largest part of the NAM.)

Notice to Users Who Purchased a Digital Copy from Origin

Aside from a brief period in 2014-2015, Origin, the digital retail platform run by Electronic Arts (EA), has been selling defective copies of SimCity 4 Deluxe to retail customers. As of the release of NAM 40, this appears to still be the case. Unlike the retail versions sold by GOG.com, Steam, and Amazon (the "Thin Game Download" version), which come pre-patched to Version 1.1.641, the Origin retail copy is Version 1.1.610. By virtue of switching out the original SafeDisc copy protection for their own DRM, Origin altered the checksum of the game's executable, which prevents the EP1 Update 1 patcher--a piece of software they made--from running. This not only prevents the NAM from being installed, but leaves Origin retail copies with all the bugs that the developers fixed in 2003. It also prevents first-party content creation tools like the Building Architect Tool (BAT) from being installed. In effect, the Origin retail copy is unpatched and unpatchable.

The NAM Team recommends you contact Origin Customer Support about obtaining a refund, even after the return period has expired, as users have had success in this case. If you are among the users who are saddled with the unpatched and unpatchable Origin retail version, the team would also appreciate hearing from you, as we have a strong desire to see Origin give their customers a properly-patched copy of the game, and are trying to document just how many users are affected.

Strangely, copies obtained by redeeming an existing CD key at no cost with Origin Customer Support (Case C) are properly patched, despite what the same support team routinely tells those who bought copies and received defective Version 1.1.610 digital copies.

In short:

  • Free copy from Origin Support for CD Key Redemption: Properly patched (1.1.641)
  • Purchased copy from Origin Store/Origin Access: Unpatched and unpatchable (1.1.610)

For a more detailed assessment of the Origin situation, NAM developer Tarkus has written extensively on the subject at his blog, SimTarkus.

Note to Mac Users

Aspyr recently issued an update to their port of SimCity 4 Deluxe for macOS, updating it from a 32-bit app to a 64-bit one on both Steam and the App Store, allowing it to be compatible with macOS Catalina (10.15) and later. This change has introduced a number of quirks, however.

Most notably, it has changed the key combination for cycling through TAB Loops under the NAM's various buttons. Instead of using TAB to move forward, and Shift-TAB to move in reverse, Mac users must now use Ctrl-TAB to move forward, and Ctrl-Shift-TAB to move in reverse. While TAB and Shift-TAB will allow one to move through the TAB Loop, these keys/combinations will cause some pieces under the buttons to be skipped.

Furthermore, the changes have also broken simmaster07's SC4MacInjector, which allowed DLL plugins--including SC4Fix.dll (which addressed the puzzle piece/TE Lot CTDs)--to run on macOS. As such, these fixes no longer work on Mac, and users should exercise caution when placing stations in the vicinity of static puzzle pieces.

Additionally, the installation procedure for the NAM varies depending on if one is using the Steam version or the App Store version.

With the Steam version, the NAM will install into the correct location by default: /Users/{username}/Documents/SimCity 4/Plugins/.

With the App Store version, after running the installer, move "Network Addon Mod" folder from the default install location to /Users/{username}/Library/Containers/com.aspyr.simcity4.appstore/Data/Documents/SimCity 4/Plugins/.

Preparing to Install The NAM

Instructions for All Users

When one initially opens the NAM package after downloading, there will be several items present, besides the document you are now reading: the installer itself is NetworkAddonMod_Setup_Version40.jar. 4gb_patch.exe is the NTCore 4GB Patch, the Controller Compiler folder contains the NAM Controller Compiler, the Documentation is loose in the folder (and in the "feature-guides", "images", and "old" folders-- this has not been substantially updated since NAM 36), and the Traffic Simulator Configuration Tool folder, which contains the Traffic Simulator Configuration Tool (TSCT).

If you are on Windows, open NetworkAddonMod_Setup_Version40.bat to begin installation. On Mac, instead open NetworkAddonMod_Setup_Version40.jar. Simply dumping the files into your Plugins folder WILL NOT install the NAM--you will get no new menu buttons, and will just slow down the game. The installer MUST be run, or the manual installation procedure must be followed. If you are on Windows, it is recommended that you If User Access Control (UAC) is enabled on your system, Windows may ask you to approve running the file with a simple "Yes"/"No" prompt. Click "Yes" to allow the installer to run.

In order to progress through the installer, simply click on each tab. Note that the license agreement must be agreed to before subsequent tabs can be accessed. The "Cleanup" tab allows one to remove any residual files from old NAM releases, and pre-NAM transit mods that might cause conflicts, and is loaded with the old Cleanitol list that shipped with NAM 36. It is highly recommended that you choose the "Backup" option instead of "Delete" after doing so, as "Delete" will completely wipe out the files, as the label implies.

Upgrading from a Previous Version

If you are upgrading from a previous version of the NAM, MANUALLY MOVE YOUR OLD NAM INSTALLATION OUT FROM YOUR PLUGINS FOLDER, INTO A SAFE LOCATION (note that this has changed from previous NAM releases).. The NAM installer can no longer detect your previous installation options by reading the existing folder structure. It is recommended that you check your existing installation, to determine which features you presently have installed.

Generally speaking, the NAM Team makes every effort to ensure that new versions at least retain some form of "legacy support", such that cities built with any previous NAM version will continue to function well with the latest version.

If you have consolidated your NAM files using a tool such as SC4DatPacker or JDatPacker, please read here.

Running The Installer

Installer Options

The NAM Installer allows for many different types of installation--with the current NAM installation, custom installation is the only option, though the most common installation is set to be the default. Note that right-side driving (AKA RHD) and US textures are the default. A base Euro texture option remains available, and both the US and EU options are available for left-side driving (AKA LHD) as well.

A Note About Drive Side (RHD vs. LHD)

While the NAM Installer, as noted above, has a series of checkboxes in Custom Installation relating to drive side, it is worth re-iterating that these boxes only change the compatibility files installed with the NAM, and do NOT change drive side. If you have an installation with Right-Hand Driving (RHD, vehicles driving on the right side of roads--this concept is NOT the same as the side one sits on when driving a vehicle) and wish to switch to Left-Hand Driving (LHD, vehicles driving on the left side of roads), this generally needs to be done either by adjusting the game's locale files, and then either editing the game's Windows registry entries, or by modifying the game's shortcut.

The new NAM Installer cannot determine default drive side of your installation, so make note of which side vehicles drive on in your game prior to installation. If you have changed your drive side by modifying the game's shortcut, instead of editing the Windows registry, then this would be the one and only case when changing the box checked here would be needed.

A Note About the "4GB Patch"

Due to changes in computer systems, and continued expansions of the NAM's main Controller file, in 2013, it was determined that many newer systems, particularly those with more than 4GB of RAM, and running 64-bit versions of Windows, need additional accommodation. To that end, the NAM includes a "4GB Patch", also known as a "Large Address Aware (LAA) Patch", which allows the game to access the full 4GB of RAM that a 32-bit application can read, instead of the default 2GB. The NAM's patch was designed by NTCore, and built into the NAM with permission, and users with systems that need the patch will receive a prompt during NAM installation to install it. The original patch can be found here.

The only thing this patch does is to switch the Large Address Aware switch, an accessible switch present in all Windows executables, from "off" to "on" for the game's executable. Patches like this are common in game modding communities, including those associated with Skyrim, Fallout, and Morrowind, and can be used to enhance any 32-bit application's performance on systems with 64-bit operating systems and a suitable amount of RAM.

The new installation starting point for Windows users--NetworkAddonMod_Setup_Version40.bat--should ensure that your game is automatically patched as needed.

Note that the 4GB Patch is NOT required for users on macOS, as that version of the game is 64-bit and can access more RAM than the Windows version (even with the 4GB Patch!) by default.

The default directory for where SimCity 4.exe may be located depends on how and where you purchased your copy of the game.

  • GOG.com: C:\GOG Games\SimCity 4 Deluxe Edition\Apps
  • Steam: C:\Program Files (x86)\Steam\steamapps\common\SimCity 4 Deluxe\Apps
  • Original Disc: C:\Program Files (x86)\Maxis\SimCity 4 Deluxe\Apps
  • Origin*: C:\Program Files (x86)\Maxis\SimCity 4 Deluxe\Apps

*Note that only Origin copies acquired through Free CD Key Redemption (Version 1.1.641) are compatible with the NAM. Copies purchased through the Origin Store or accessed via Origin Access (Version 1.1.610) ARE NOT COMPATIBLE. See here for more details.

Running the Controller Compiler

If you are an advanced user, and would like to trim down your installation of the NAM, it is still possible to run the NAM Controller Compiler (a cross-platform application) after installing the NAM. Extract/open the "Controller Compiler" folder, and double-click the file "NAMControllerCompiler.jar". Select the 'input' folder "Network Addon Mod/Controller/" from the current "Controller Compiler" directory, and the 'output' folder "~/Documents/SimCity 4/Plugins/Network Addon Mod/" inside your plugins. For the rest, follow the instructions of the compiler.

Regarding "DatPacking" and File Consolidation Post-Installation

Programs to consolidate folders worth of SimCity 4 .DAT files, such as SC4DatPacker (Windows) and JDatPacker (cross-platform), are popular options known to improve game performance, given SimCity 4's preference to read a smaller number of larger files, instead of a larger number of small files--a fact determined by the BSC Team's "Miramba Experiment" of 2006. The use of "DatPacking" programs on one's NAM installation, however, is a controversial topic. The NAM Team's general advice is for Windows users to avoid DatPacking (unless one is extremely careful, while for Mac users, the use of JDatPacker is virtually required.

In general, if one plans to DatPack one's NAM installation, they should also save the pre-DatPacked NAM folder in a safe place, outside the Plugins folder beforehand. The reason for this is to avoid potential conflicts and issues, such as the "dual icon bug" and Controller file conflicts between new and old installations, as well as to make it such that one knows which options they have installed when upgrading to a new version, or re-installing the same version with different options.

In the case of the Aspyr port for the Mac platform (both App Store and Steam versions), it possesses a strange quirk in which exceeding a certain number of files or folders (regardless of size) in the Plugins folder can cause game slowdowns or even crashing-to-desktop (CTD). To this end, using JDatPacker after installing the NAM on a Mac is a necessity, in order to ensure proper game performance. Again, however, one should save their pre-DatPacked NAM installation in a safe place, outside the Plugins folder, to make for easy upgrades.

Uninstalling the NAM

To uninstall the files, simply bulldoze every NAM item from this download in your cities and remove the files from the Plugins folder afterwards, which will be contained in Plugins\Network Addon Mod by default.

Changing Options After Initial Installation

The NAM is a very expansive mod, with a substantial number of features, which may initially prove overwhelming to those not well-versed in its workings. The NAM Team anticipates that users, particularly those new to the NAM, may want to change the feature set they have installed, as they learn more about the mod's contents and capabilities.

To that end, we encourage users to keep the installer for the current version handy after initial installation. If you plan to change your particular set of options, you will need to remove your current installation. Moving it out of Plugins to a safe location is recommended, in case you want to keep your existing settings as a backup.

Manual Installation - Advanced

Users who are unable or unwilling to install Java can perform a manual installation of the NAM, something which the new file architecture introduced in 2020 makes far more possible than the previous "Monolithic" releases.

This method requires a file decompression tool capable of opening .jar files, such as 7-zip (Windows) or Keka (macOS). To begin, open NetworkAddonMod_Setup_Version40.jar using your file decompression tool.

The NAM's contents are located in the "installation" subfolder. The current installer uses a series of character flags at the start of directory names, in order to instruct the installer how to order the options, whether they're mandatory or optional, etc.

Numbers preceded by the dollar sign ("$"), i.e. "$1", "$2", etc., are merely being ordered with this flag.

Any directory with the caret ("^") in front of the name (or behind a "$" ordering flag) is mandatory.

Any directory with the exclamation mark ("!") in front of the name (or behind a "$" ordering flag) is not installed by default.

Any options where the equal sign ("=") and the dash ("-") are present are mutually exclusive--only one should be installed (the "=" option is the default).

The "$1^Core" directory is required. All other folders have options within them. With "4_Automata Controller#", "7_Texture and Drive Side Support", and "8_Traffic Simulator#", simply select one of the options inside and discard the rest, as these are straight up mutually exclusive one another.

The Automata Controller basically affects the display of the visual traffic in-game--Standard is going to be the lightest, while Radical is going to be the heaviest, Persistent makes the automata visuals last longer, and the 24-Hour modifiers handle whether the display is constant, or follows the data for the 24-Hour clock in-game.

The Texture and Drive Side Support includes four options, depending on whether you want to use US/North American textures or Euro/International Textures, and the drive side of your game (RHD or LHD, which should match your selection for the NAM Controller).

With the Traffic Simulator, these are ordered by the "$1" and the like in order of lowest capacity option to highest. Medium is the default.

With 5_DataView Options#, there's two subfolders. Both are just straight up options, with nothing mutually exclusive. You can probably just leave this one as is, unless you really don't like the Data View changes.

With 6_Miscellaneous, the two mutually exclusive options to watch out for are Extended Station Queries (there's four options in there--very subtle differences between them), and Maxis Transit Lots\Airport Capacity Adjustment#, which has three options (Default, Medium, and Large). And the Hole Diggers and Raisers are very much recommended--they have lots of use outside regular NAM usage, too.

With 3_Additional Transit Stations, this depends on if you want more transit stations beyond the game's default, and what the NAM adds by default for certain additional override networks. There should be no harm in either adding this one in whole, or leaving it out altogether, and if there's certain added stations you like/don't like, you can go in and customize this later.

2_Additional Network Features is by far the biggest area of the installer. This contains all the actual network feature addons in the mod. Most networks/network groups will have a "Base Features" folder, which really ought to be mandatory, as it contains a lot of the NAM's basic additions to each network, along with any Wide Radius/Multi Radius Curves and Fractional Angles, as well as Roundabout options for the various road-type networks.

The main "mutually exclusive" option to look out for here is with the Maxis Highways (there's two options--$1=Default Style, which keeps the Maxis Highways' default look and adds the NAM's additions for it, or $2-Maxis Highway Override (RHW-Style), which completely reskins the Maxis Highways, removes access to the default interchanges, and replaces them with RHW-style modular interchange functionality and a few new ploppable interchanges. Using the RealHighway (RHW) option is pretty much mandatory if you're going this route).

The other ones to watch out for are in Water Transport, where the Canal Addon Mod (CAN-AM) has two mutually-exclusive styles ($1=Callagrafx Style and $2-SimGoober Style), and there's also quite a few "non-default" options in Roads, One-Way Roads, and Avenues.

Those three non-default options are !Legacy Auto Avenue Turn Lanes (these are the old auto-turn lanes that appear on Avenue x Avenue intersections--largely considered "deprecated" now, as they can interfere with some newer functionality), !Legacy Semi-Auto Road Turn Lanes (the "semi-auto" replacement for the old auto-turn lanes on Road x Road intersections, which now appear by clicking over Road x Road + and T-intersections with the One-Way Road tool, also somewhat "deprecated" now), and !One-Way Road Arrow Plugins. These Arrow Plugins are mostly just a matter of taste, and, despite the folder naming, actually supposed to be mutually exclusive. "Elimination" gets rid of the arrows entirely, "Reduction" hides some of them (and actually impacts the base functionality of the OWR network to some degree), while "Single Arrows" replaces the default double arrows with just a single arrow (which looks nicer on the NWM networks).

The rest of 2_Additional Network Features is pretty self-explanatory, though micromanagement of these options is not recommended, since it is possible to produce a broken installation this way. RealRailway is the only/default option for Rail now, it's best to go all or nothing on RealHighways (RHW) and the Road, One-Way Road, and Avenue folder's "Additional Widths and Turn Lanes" option (which contains the Network Widening Mod and FLEX Turn Lanes). And if something says "Legacy" but it's not prefixed with "!", it's probably safest to install it, as it pertains to being able to keep certain older, deprecated content working, if you've built it with previous versions.

Information for Users on Lower-End Systems (32-Bit Windows/<4GB RAM)

Users attempting to run the NAM as installed by default with the full NAM Controller, on systems with 32-bit Windows and/or less than 4GB RAM, will not be able to make use of the required 4GB Patch, and will encounter Crash-to-Desktop (CTD) errors with that default Controller. The only solution to this is to either select one of the "Low RAM/No RHW" options in the installer, or use the NAM Controller Compiler to manually compile a smaller Controller file. Instructions on using the Controller Compiler may be found here. Note that the "Low RAM/No RHW" options do not include ANY code for the RealHighway (RHW) plugin, so attempting to build RHW systems will result in everything reverting to the base RHW-2 network. The single biggest contributor to the Controller's size is the RealHighway (RHW) plugin, so unchecking (or strictly limiting) the RHW options in the Compiler will have the greatest impact in mitigating that file size. Note that the NAM Controller is one of the most critical files in the entire mod; without a NAM Controller, none of the NAM's menu buttons will function, instead resulting in a "red arrow" when clicked.

The NAM Team is currently evaluating the possibility of producing a further "NAM Lite" package, designed to support lower-end systems, novice users, and those seeking a thinner install right out of the gate, with all the other improvements present in the most recent version of the NAM.

Users wishing to run just the NAM's Traffic Simulator improvements should skip the NAM installer itself, and instead run the Traffic Simulator Configuration Tool (TSCT), which is located in the Traffic Simulator Configuration Tool folder of the download.

Distribution and Old Versions

The NAM Team only provides support and allows distribution of the most recent NAM version. With the exception of older non-English language versions (which are supported by their respective sites, not the NAM Team), no technical support will be provided to users of prior versions of the NAM, nor will any past versions of the NAM be made available for download, by request or otherwise. The team does not keep an official archive of past releases, and does not have the resources to answer questions regarding them. Each release includes improvements across the board to features new and old, is designed to be as compatible with cities built with previous versions as is humanly possible, and is also intended to improve the end user experience. Old releases are inherently inferior, and not "simpler" or "easier" to use.

Users wanting a smaller feature set, due to technical limitations, or unfamiliarity with the NAM's vast options, should instead seek to install fewer options in the current NAM, potentially coupled with the "Low RAM/No RHW" option, manually compiling a smaller NAM Controller, or wait for the proposed "NAM Lite" package to release.

Users wishing to hold onto old versions should back them up in their personal archives. Note again that no technical support will be provided for this, nor may any user or site redistribute any old versions.

 Network Addon Mod - Credits

The following named members of Simtropolis, SC4Devotion and SimCityPlaza have, for whatever particular reason, been specifically included here for their special contributions during the NAM's history. Very special thanks goes towards them in the making, supplying, &/or supporting of this mod &/or its contents possible in one way shape or another:

The NAM Team (Active Members as of NAM 40)

  • b22rian
  • Durfsurn
  • eggman121
  • Flann
  • Girafe
  • Haljackey
  • Indiana Joe
  • Kitsune
  • McDuell
  • metarvo
  • mgb204
  • noahclem
  • pierreh
  • rivit
  • Tarkus
  • Tyberius06

The NAM Associates (Active Members as of NAM 40)

  • APSMS
  • bladeberkman
  • CaptCity
  • compdude787
  • J-dub
  • Jiwoahn
  • Lucario Boricua
  • Ramona Brie
  • Ryan B.

NAM Founders

  • Redlotus
  • the7trumpets
  • Tropod

Tool Programmers

  • cjmarshall
  • CorinaMarie
  • DarkMatter
  • daeley
  • fafalone
  • GoaSkin
  • Ilive
  • jondor
  • memo
  • null45
  • rivit
  • simrolle
  • Stefan79
  • Tropod
  • wouanagaine

NAM Installer

  • Andreas Roth
  • daeley
  • frimi2
  • Tarkus
  • wouanagaine
  • z

NAM Controller Compiler

  • memo

Contributors & Testers

  • 3ddz
  • Alidonkey
  • Andreas Roth
  • andreharv
  • Andy80586
  • Anthracite
  • ardecila
  • ArkenbergeJoe
  • BigSlark
  • blahdy
  • Blue Lightning
  • brenda_xne
  • buddybud
  • CasperVg
  • choco
  • Chrisim
  • Chrno
  • Ciuu96
  • Colyn
  • CorinaMarie
  • CryinG.FreeM4n
  • daeley
  • deathtopumpkins
  • DebussyMan
  • DuskTrooper
  • dedgren
  • Dexter
  • Diggis
  • DJPTiger
  • Dragonshardz
  • Droric
  • ebina
  • elgoalio_29
  • Filasimo
  • frimi2
  • fukuda
  • Ganaram Inukshuk
  • Generalcamo
  • gizmo28
  • Glenni
  • GoaSkin
  • Ill Tonkso
  • isii94
  • jdenm8
  • jeronij
  • jmvl
  • joelyboy911
  • Jonathan
  • jondor
  • jplumbley
  • Karybdis
  • manchou
  • MandelSoft
  • memo
  • Mero90
  • michi_cc
  • MIncroabl
  • moonlinght
  • morifari
  • mott
  • mtg
  • Murakumon
  • MushyMushy
  • Nardo69
  • nooneatall
  • north country dude
  • paulvmontfort
  • plunderer
  • praiodan
  • Olasz
  • qurlix
  • rickmastfan67
  • riiga
  • Ripptide
  • RogerRon91
  • royal
  • Sabretooth78
  • samerton
  • Schleicher68
  • Seaman
  • Shadow Assassin
  • Simmer2
  • sithlrd98
  • smoncrie
  • Spocky
  • squidi
  • Stefan79
  • superhands
  • swamp_ig
  • Swamper77
  • Swordmaster
  • Teirusu
  • The_Great_Chozo
  • Thorvin
  • threestooges
  • titanicbuff
  • Tropod
  • vester
  • vil
  • vortext
  • woodb3kmaster
  • wouanagaine
  • xannepan
  • xxdita
  • Xyloxadoria
  • z
Special Thanks

Webmaster & administration staff at Simtropolis, SC4Devotion, ModDB, and SimCityPlaza.

All (other) members of original Simtropolis Modd Squad, especially the Modd Squad founders.

And possibly others who may not have been mentioned. If your name has been forgotten or you're not on the list, then drop us a line, as it has been difficult to keep track of anyone/everyone that may of helped somewhere along the lines.

And to the community itself, we would also like to thank you for your support, making mods such as this possible too. We're still at it after 17 years thanks to you!

And last but not least, a thanks for the Maxis individuals too, for the [paid] work that they did. ;-)