Hmm... this one's not really classifiable. It's designed as a teams map, with very fixed goals. On the plus side, the goals seem pretty cool, the level design is quite good.
A dramatic enlargement of an old Infinity map... the readme still doesn't make that much sense (it suggests this is a small map), but the level is quite interesting.
Another 5D offering from the world's only fisheye aficionado. This one is a small room with 4 pillars... 4 times. Confused? Try playing. And beware... he's shooting for 8 layers.
A 17-level nethop map with a seriously cool intro level. Most of the individual levels have been released in some form... many have changed pretty radically, though. Get this map for its grandeur alone.
The first official submission of a map that requires Aleph One, the work-in-progress resulting from the M2 source code release. 8 levels, using several unfinished bits from the Orphanage as a base.