A full-blown port of the M1 scenario, Devil in a Blue Dress. I won't hype this too much, since it's my baby, but it contains 21 solo levels (painstakingly debugged), almost 7 megabytes of original artwork, and 2 megabytes of original sounds. If you've played the original, you'll find all-new puzzles, secrets, and enhancements. If you haven't, this should keep you busy for almost as long as Bungie's M2 scenario.

Because of it's extreme size, it's also available in floppy-sized chunks.

The second part of the Dragonfly trilogy that started with What Ho! Jeeves, this is a slightly more involved scenario than the first one. You still have a dry, erudite AI helping you along, but there's some serious fighting going on. Four levels, but the first three are a cakewalk. (The forth is definitely not.) This should provide you with some good stress-burning opportunities.

A large cloverleaf arena, with four underground loops for added space. An insane collection of monsters for a net level (four jugs in the main arena!), and lava you can't get out of... but it plays okay. Big enough for 8. Update cleans up textures, adds weapons, and tones down monsters. Much more playable, now...

A well-built 5D map that's seriously confusing until you get the hang of it... and then carnage gets absurd. Don't stay on the hill for too long... it's very, very dangerous. Nice use of the portals concept. Update darkens up the outside stairways, and reshapes the portals. Overall, this is a very playable map.

A three level solo scenario. Needs a great deal of texture alignment, and the lighting could stand a bit of sprucing up, but there's plenty to kill... I got a little tired of the fight-to-a-teleporter, see-if-you're-done style.

The infinity level, ported to the M2 alien textures. It's no longer vacuum, and all the baddies are gone... but so are some of the windows (which makes for easy transfer from hallway to hallway, actually).

A multi-tiered level based on the concept of a box canyon. There are no indications for the elevators... you just have to know where they are. Seemed really, really low on ammo, as well...

The next installment of the series started with Codename Genesis. Hmm... "non-trivial" comes to mind. A fiendishly designed level (plus a nice setup level), with nasty traps, cool terms, but more than anything, physical puzzles requiring timing, more than anything. (Or at least that's what it boiled down to for me...) Well worth the download.

A KOH level designed for two players. (I suppose there could be more, but it seems best suited for two.) The hill is, as the title implies, a control room, and provides switches for five elevators that make up the main floor of the arena below it. The person in the booth tries to crush his opponent, who tries to stay alive long enough to plant a missile where it counts. A back hallway provides more than enough ammo.