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.

A big series of rooms connected by teleporters. Feels like a normal level (actually plays pretty well, although it's way too big for anything less than 6 people), until you check out the map view...

9 maps. There are some really, really good ones here... the last three are a lot of fun. Emphasis is on vertical movement via silent, fast elevators. Lots of sniping positions-you'll need to experiment with teleporters to figure out what goes where. You're rarely safe, even on the larger levels...