BOTS are something that I would love to see in this game - dynamic BOTs! meaning that they would enter and leave servers as required. For example: If the server was created for a 2v2 TDM game, then the server would start with 4 BOTS in it, then for each player that connects to the server, a BOT leaves! Also, for each player that leaves the server a BOT would reconnect.
Both BOT and Gamemode code would most likely be program changes, rather than mods (at a guess).
You can get the game source code from the Downloads page:
http://www.teewars.com/?page=downloads
I'm guessing if your BOT code is good enough, they might incorporate it in a future release!?