Geometrical, but easy to lose track of where you are.
Two maps. Very geometrical. Watch the glass walls.
Has a geometrical feel. Good flow, nice balance of passageways, open areas, and sniper ledges. New version has been much improved
Another 5, all original. I think our favorite was Narrow. Watch for freezing crashes in Yer Out There!
Teleporters send you to a small prison for 45 seconds, where your enemies can take potshots at you.