A very nice large arena, with a fast-moving peripheral ring. Two rechargers in the center, but if your opponents are any good, you won't be able to use them. In solo mode, the aliens give you a nice run for your money... troopers and hunters regenerate at absurd rates, but enforcers and fighters are on your side to help out. (Careful, though... there are enough enforcers that friendly fire is a real hazard.) Attractive design, and great flow.

Two maps (well, there are three, but the first and the third are identical) with some very interesting physics experiments. The first map has a very useful jetpack built into the second trigger of every weapon. One of the best I've used. The second has some pretty serious weapons modifications... as a solo test level, this one'll keep you coming back for more, and as a net level... well, carnage rates will be pretty absurd. Nicely done, as experiments go. Give 'em a try!

6 levels, three previous releases with tweaks, three new. Mostly geometric layouts, but they work pretty well. Lots and lots of baddies, so solo works fine, lots of physics tweaks ...

Geometrical, few visual cues as to where you are. Constantly regenerating baddies give you something to shoot at if you have no net connection, but a plethora of invincibility powerups make them rather impotent. Don't fall in the water... you get transported to a room with no escape, and the only way out is to sucide under a crusher.