I wrote a very simple FPS in Away3D 4 (works with FlashPlayer 11 incubator build and Firefox) http://doublebow.net/uploads/assets/a008/game/game.html
Download game sources: http://doublebow.net/uploads/assets/a008/SimpleFPS_source.zip More information: http://doublebow.net/articles/actionscript-3-0/simple-fps-3d-game-in-away3d-4-broomstick Please leave feedback if you like it, dbow