In each level, the player protects three pieces of fruit using a blaster that moves horizontally along the bottom of the screen. The joystick button fires a shot upward toward four types of attackers. Each level contains a set number of "master nests": enemies which can grab a piece of fruit and drag it off the left side of the screen. A nest drops the fruit when shot. The game ends if all fruit has been stolen or all of the blasters are destroyed. The type of fruit varies per level: grapes, strawberries, oranges, and bananas.
There is an option to have the shots move horizontally with the blaster after being fired, allowing them to be steered.[2]
At the time of release, anyone who sent a photo showing a score of 40,000 or more points received a patch for the Activision "Spider Fighters."[2]