Circles inside of circles inside of circles inside of... Lots of staircases. A central (small) courtyard. Be sure to collect your weapons and ammo before going in... for some reason, the center doesn't seem to be big on the engine's random list. Nice looking, and very dangerous. Also available in an Evil flavor.
A large level, with architecture reminiscent of the author's Alhambra. A bit darker, though... and with more indoor space. The author has suggested a somewhat unique solo method of play-see the readme for an URL with details.
The most complicated (and in some ways, the prettiest) of the Flame Pits levels. Very nice flow, once you get the hang of it... before that, it's easy to toast yourself running out a doorway on the outer ring. Also available in an Evil flavor.
A central covered arena, with a surrounding lava moat and a second arena above. Judicious use of 5D space to supply a nice quantity of carnage space. Also available in an Evil flavor.
A large open area with 4 lava-filled pits. Switches on the outside edge control the lava height... and the aliens that can nail you. Best as KOTH, but playable as EMfH.
A large, open level with ledges leading to a central hill, all surrounded by lava moats. If you fall in, find an edge near the hill... you're not toast yet. Also available in an Evil flavor.
A simple, square arena enclosed by a wall. Access to the wall is gained by climbing the water towers... but the towers can be enclosed in solid columns. Careful if you're going up, and someone's near the switch! Also available in an Evil flavor.