Crazy zone is a spoof shoot-em-up that feature two extremely hard levels of insane crazy kill or be killed action.
This game was originally done for a game competition waaaay back in 1999, and here it is again 10 years later, just as fun, perhaps not as stylish (although they do say pixelation is the new anti-alias).
You may configure the controls at anytime by clicking the joystick icon, by default they are:
Start/Pause => [Enter]
Move => [ArrowKeys]
Fire => [D]