An open arena with a tower in the center, and a spiral path around the outside to reach it. This version fixes the zero length line bug the original had.
When I first tried this, I hated it. After about 3 minutes, though... this is a pretty decent map. Well laid out in terms of ammo/weapons vs. open space... there's no free lunch here. You want stuff, you got to take chances.
A multi-level arena. Light plays a pretty key role here... and there are secrets to be found, if your playmates don't kill you first... It's on the small maps page because it's all pretty much in one room, but it can easily support more than four players.
3 levels. These didn't thrill me as some have... and Circle Jerk has a bit of smearing if you're looking at the platform next to you as it moves (somewhat unavoidable, given the Marathon engine). Still fun, though...
Lots of very long, very narrow passageways, and no real ammo. Comes with a physics model. Impossible without it (the hunters will take you down very quickly), but way too easy with it...