Zapper is a top-down hopping adventure featuring a cricket with the power to zap enemies. As Zapper, you traverse levels with the ultimate goal of saving your brother Zipper from the clutches of the thieving magpie, Maggie.

During a squabble over television, Zapper tries to use his brother Zipper (a grub) as a substitute TV antenna. Zipper is snatched away by an infamous thieving magpie, Maggie, who leaves an egg at the scene of the crime. Unfortunately, much to his dismay, Zapper sets off and determines to rescue his brother and turn Maggie into a jailbird. At the end of the game, Zapper gets Zipper back after defeating Maggie, and finally sets him up as a substitute TV antenna, just in time to watch TV by himself.