Double-level map - the bottom is a pillar-filled arena with lots of hiding spaces. The top is a ring around the outside, with teleporters and stairs jumping between the two. Dark. Unmerged.
Big open (dark) pit, lots of running rooms on the outside, more rechargers than you can shake a stick at.
Complicated, funky spaces, lots of stairs. Takes a little while to get used to - figure out where you are. More than enough ammo and weapons for a huge game - tight enough (once you get used to it) for a small one.
A two-level wheel. Plenty of ammo and weapons, easy cover. Movement (due to the small size and the teleporters) is very fast.
A pit with wild lighting- does a good job of hiding snipers on high. Watch out for that ammo cache! Unmerged.
A large central arena, with a maze of corridors around it. Lots of rechargers (though most aren't safe, unless the groups are small).
Good for KOTH - the vertical scale is great enough that SPNKRs are nearly useless for hill-sniping from above. The downstairs is interesting, as well...
Pretty funny - there's an invulnerable bob in the center of the map, firing rockets in a loop, periodically. You can't hurt him, and you can't survive the rockets... so stay out of the way! Makes for an interesting obstacle course...
A tiny arena with a raised ring around the outside. There's a 2x recharger in the center... but it's pretty hard to use without being SPNKed. Unmerged.
Central arena, raised hill, lots of sniping spots, LOTS of ammo. Go for it.