The game has the player being in command of a missile base somewhere in Kansas. Missiles rain down missiles onto the player. Each missile has an associated number or letter which the player must identify and type in. The game then launches a rocket or fires a beam to intercept.
Points are awarded for each missile destroyed with bonus points being awarded for missiles destroyed at high altitude. The game ends when three missiles have landed.
The game has nine progressively more difficult levels and records the top ten high scores of each.