You have been sent along with Mister Tronic on a mission of mercy to rescue the Purple People Eaters and Martians from the planet Grebus. Use skill and strategy to outwit the computer and teleport the aliens to a safer planet.

Mistertronic has been sent on a mission of mercy to the planet Grebus. The planet is devastated and the inhabitants - the Purple People Eaters and the Martians - are in suspended animation and must be teleported to the nearest suitable planet. However, the computer controlling the teleport has decided to make it difficult for you. You must help Mistertronic 'Walk the Plank' against the computer and to teleport the aliens, you need to get four Purple People Eaters in a row, whether it be vertically, horizontally or diagonally.

Skill and strategy are needed in this addictive game for people of all ages.