Overlord's Idea sounds pretty good. Then whenever you create a new level you could get a bot to 'learn' the level, then add it into the zip. But one hard thing will be programing the bot. Like wheather it should get a carrot, weapons, or attack, or capture the flag, or something else. And if a bot is created, then a command-mode would be nice. Namely for CTF, so you could say the commands that are oftenly used in team chat and it will respond to them.