The Grinder v2.0

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.