This thread contains useful links and information regarding adding plugins to your SimCity 4. First things first: In order to use mods/plugins, you must have SimCity 4 Deluxe or Rush Hour.
New to the whole plugin/modding scene? The following thread will explain the whole idea of custom content, how to install it, and more: Looking for some mods to install? This thread describes ten essential mods.   1. How do I install mods?   2. Can you recommend any mods to install?   3. I'm getting brown boxes in my cities!   4. The building I downloaded doesn't have nightlights/How do I update (patch) my game?   5. SimCity 4 keeps crashing/closing randomly!   6. SimCity 4 won't load, it keeps crashing on startup!   7. SimCity 4 keeps crashing when I load a certain city!   8. SimCity 4 lags a lot for me!   9. How do I install/create maps (GREYSCALE IMAGE FORMAT)   10. How do I install maps (.SC4M FORMAT)   11. SC4Terraformer won't work for me on Windows Vista/7/8!   12. I want moar cheats ingame!   13. How can I change the driving side of my SimCity 4 (eg, from Left Hand Drive to Right Hand Drive, and vice versa)?     14. Where can I download the Network Addon Mod (NAM), and what is the latest version?   15. I downloaded the NAM but it has broken my avenue junctions and my rail!   16. How do I make my roads look European/with white dashed lines?   17. How do I create my own buildings?   18. Where can I find the Maxis Files, such as bldgprop?   19. How do I change the resolution and/or run SimCity 4 in Windowed Mode?   20. I'm getting really weird graphical bugs on Windows 8/8.1!   21. My SimCity 4 discs won't work on Windows Vista, 7, 8 or 10!   More Useful Links New to modding?  https://www.simtropolis.com/omnibus/_/SimCity-4/reference/for-the-eager-yet-overwhelmed-newcomer-r204 Want more plugins?  https://www.sc4devotion.com/forums/index.php?topic=6209.0   If there are any issues you're having that aren't covered by this guide, please feel free to send me a PM and I'll try my best to update this guide.   Last updated: 27/12/2018 - NAM version update