I'm working on a small flash game for school, using blueprints from my school's map. Right now, you can just walk around and shoot things, but you may find some amusement and/or challenge in the current test setup.
Controls: Use the arrow keys to move and rotate, z and x to strafe, spacebar to fire and F5 to reload the game if you die.
The quality is set to Low by default, so feel free to increase it manually by right-clicking the movie if you have a computer good enough. And no, your gun cannot fire through walls; theirs can. But yours is much faster.
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram