A very interesting concept map. Two player only (you can't play it solo-you need someone to let you out-and more than two doesn't work, either). One player has a SPNKR but is trapped, the other can move but has only a pistol (and access to a crushing elevator for the trapped one). Makes for some fun strategic games! Update contains a 1-player tryout (so you can see what's going on), and a second level... also pretty interesting.
Author calls this a silly net map, but I disagree. This one's a lot of fun... Comes with a physics model, required. The point is not to kill your opponent, but to force him into a pit, where a modified hunter will do the job for you. The one with the fewest deaths wins.
Pretty fun with a few people. The arena is all space texture, landscape mode, so you've got no idea where anything is. A bunch of teleporters will take you to small waldo-world-like rooms for ammo and weapons, and one will take you to an invisibility powerup (which makes you pretty unbeatable, in the arena part). No spankers or tozters make for a fun shoot-em-up.