ahh
blademaster7 beat me to the punch. pretty much body ladder, but with a wider screen, thus more enjoyable gameplay.
a few things you should change is how you can move up and down a pile, i think you should just keep it at the top. another thing is the weapons. you cant switch between specials. also, specials werent as good as teh main weapon. the only good special was the laser, but the game never spawned enough people at once to do signifigant height.