Do you now the Clay Soldiers mod? It is one of the best mods i've ever heard of. You have some colored clay soldiers in your hand, plunk them down on the ground, and they fight against every clay soldier of another color.
Download link for the Clay Soldiers Mod:
Here is the map:
http://www.mediafire.com/?9h3iy6tcijh9nhz (the arena without the clay soldiers)
http://www.mediafire.com/?kg6znlewpdcwk3y (the arena with the clay soldiers in it)
please don't post ur comments here, but place them in the tab of 'the Clay Soldiers Arena'. I won't be able to response to them very well...