Canyon Bomber Portable by Leo Cabrera is a clone of “Canyon Bomber” originally released for the Atari 2600. Goal is to destroy as many colored blocks as you can before time runs out.

Rules:
* You are awarded 100 time ticks, a bomb, and a speed increase every 500 points.
* You lose a bomb when it hits the green canyon without hitting a colored block.

http://forums.qj.net/showthread.php?t=140638