Sauerbraten is a free first-person shooter with a fun in-game editing mode unlike most 3D level editors; it's based on deformable cubes rather than brushes or plain polygons. The maps here are my own creations (however, the textures are not my own; I use the textures included in the Sauerbraten distribution). This work is licensed under a Creative Commons Attribution 3.0 United States License.
This is a small DM map using the Quake bumpmapped textures as seen in fanatic_quake (and I've shamelessly borrowed some style elements from that map also). This is the fourth Sauerbraten map I've worked on (hence the name), but only the first I've considered anywhere near "presentable".
This is a dark CTF map in an indoor facility with plenty of ammo pickups and a couple of routes between the flags, with a (hopefully) interesting layout with two mirrored bases side by side.