4 levels, all orginal. Some very nice twists on KOH-type games... and one that wouldn't work with two people (it's called Eyes in the Back of Yer Head, and you wouldn't need 'em without a third person...). Carnage rating-very high.

A huge, sprawling 5-D space level. Very easy to get lost, lots of narrow passageways. (You can use wall textures to help you navigate, until you run into that infrared powerup...)

3 Maps. These work better (imo) as M2 maps, although they play faster, for some reason, as M1... The M2 version is called M2 Suicide 13.

Still a pair of arenas, but textures have been aligned, the water moves a bit, and other small tweaks have been performed. Update adds an invincibility.