Somewhat related: There is a game based on Quake Arena called Urban Terror. It has a good community of modders that help others learn how to modify the game. I

Somewhat related: There is a game based on Quake Arena called Urban Terror. It has a good community of modders that help others learn how to modify the game. If you do not have too much luck with Quake2, you could look into this as as well. Good luck hacking.