Ok I couldn't help it. I used the trial version of molebox for the demo. It's just a short demo, when you reach the area with no enemies, just hit escape. Use mouse to move, left mouse button to shoot, right mouse button to fire linear missiles. Also, there seems to be some sort of strange artifacting at the bottom of the screen, not sure why... Tell me what you think.

http://rapidshare.com/files/124619856/gf_prev.rar.html