This is in the same vein as 20 Minutes of Hell, for you M1 solo players. No plot (well, there is background in the readme, but it's mostly just window-dressing) - the point is to kill and stay alive as long as possible. A good stress-burner.

A simple arena with some funky lights. Cool looking stairs.

5 more, all M1 original ports. Watch your back!

Big, and geometrical. Lots of nooks and crannies... play it once before you get your friends together for a net game-it's in your interest to understand the switches before you begin.