Old version: http://www.arcadeprehacks.com/game/91/Smileys-War.html
New version: http://www.arcadeprehacks.com/game/5471 ... -Wars.html
Personally I like the new version better. It's got more hacks and in the old version, the enemy just walks off the edge of the arena, in the new one they don't.
One needs to be deleted...