I also remember Mechwarrior 2 came out before Quake and was mostly 3D-ish. Granted most of the levels were flat but you could jump (with jump jets) and climb on

I also remember Mechwarrior 2 came out before Quake and was mostly 3D-ish. Granted most of the levels were flat but you could jump (with jump jets) and climb on top of some terrain.