A simple arena, with a couple of ledges around the outside. There are elevators to get you up, but they've got a hell of a delay... and you're pretty brightly lit. There's some nice goodies underneath, but to get them, you've got to run a sort of gauntlet. Works best with at least 3...

The primary feature of this map is the crusher. There are lots of them, and they're all user-operable. Makes a great way to kill your friends... (you won't get credit in the carnage report, but their death tally will still go up). Very nicely done, overall. Worth a look.

Several small, interconnected rooms. Sniper positions tend to be below a level, rather than above... pretty fun. 1.1 update added quite a bit of new space (including an out-of-the-way arena), and changed the alien balance. 1.3 update aligns textures, adds lots of water, and seems to decrease total alien population. This is no longer a small map.

A small, circular arena, a remake of a Kendall Redburn M1 map. It was a nice map to start with, and this version keeps the gameplay of the first one while upgrading the look.