this is a classic Red V.S. Blue arena, which includes lots of redstone, controllable lights, water separating the 2 sides, roof access hatches for both teams, open-able gates and arrow dispensers,( DO NOT USE GUNPOWDER IT WILL BREAK THE REDSTONE UNDER THE FLOOR!!!) you have been warned. sorry no pics :(.
(you need the clay soldiers mod
link is here: http://www.minecraftforum.net/topic/964897-125-sp-clay-soldiers-mod-v-7/ if ya don't have it.
:D

pic has nothing to do with it :D comment plz and tell me how i did.

Additional Notes

I didn't try to hide some of the red stone cause it will look like crap if i did :D. if you like it gimme a diamond. if i didn't choose the right save comment please.