Graphics Rules Maker is a tool to make Maxis games (The Sims 2, SimCity 4, possibly more in the future) more compatible with modern day systems. It manipulates some of the game's scripts with specific tweaks to make the game correctly detect the modern hardware.
The Graphics Rules Maker comes with no warranty whatsoever. If your game doesn't run after this, restore the back-up files or reinstall the game. Also, none of the available tweaks are guaranteed to actually fix your game.
Please contact us if you experience problems with the tool, find any bugs, etc. You are also welcome to contribute to it through the project page (the source code is available through there).
Support for other games - most notably SimCity 4 - will be added in the near future.