Arrows, W/A/S/D Turn, move forward/backward
Q/E or Space+Left/Right or Space+A/D Strafe left/right
Shift Turn 180 degrees (quick turn)
Tab, F6 or Page Up (depends on browser) Switch to fullscreen mode. (note: due to Flash security limitations only the arrow keys and space are available in fullscreen mode when using Flash Player 10. In Flash Player 9 the fullscreen mode is not available because keyboard is totally disabled when using fullscreen).