Designer Howard Delman's arcade original features various flying vehicles over a "canyon" consisting of round blocks. The player doesn't control the aircraft directly; rather bombs are simply dropped with the fire button. Timing is crucial, as missing a block four times ends gameplay. The game resembles an inverted breakout-style block-breaking game, but with no rebounding ball.
The Atari 2600 remake features similar gameplay, with color graphics, and various difficulty modes.