A fast-moving arcade game, with you escorting a convoy of 26 space liners to their base planet - your task on the way is to defend the convoy with your fighter ships.

The liners themselves have four colour-coded protective shields; each time a liner is hit by an alien ship (or random meteors) one shield is destroyed.

When first playing the game you'll find the speed devastating - just the slightest movement of the joystick and you go zooming across the screen straight into the alien ships (or you might go crashing into your own liners, as I did more than once!). Control takes some time to get used to: but once this hurdle is over the game becomes a little easier.

The sound and graphics are quite good; each new wave of aliens make a different sound to the last. And I enjoyed playing this game!