Its based on a similar concept to space invaders
RecWar is an interesting game that offers some of the hottest death match action.
More Mario. And this one is really quite good
This is your basic one on one fighting game except with major improvements in features and quality.
By far the best one in the series
Death Illustrated is another unbelievable freeware game. Think of Quake 2, but free!
A top view action shoot em up
It's one of those games where you get to cause as much havoc and mayhem as humanly possible.
Kill as many monsters as you can without dying
A very nice 3D fighter from Japan which plays like a real life arcade game.