Llamasoft goes from strength to strength - and this game could be the ultimate challenge. The joystick is used to control two spaceships, one horizontally along the bottom of the grid and the other vertically along the lefthand side.

Wave after wave of the inevitable aliens drift in both directions and you have to destroy them by aligning one or both spaceships on grid intersections and firing. It aliens reach the edge of the grid they advance towards you, bent on your destruction! To overcome the problem you can use diagonal fire to protect one spaceship - as a last resort you can blow one of the limited supply of Electros. Complex it is, but happily the game includes a training mode which enables you to master spaceship control. This is the most difficult game we have come across so far; but the superb graphics, sound and colour ensure that you are committed to return to this exhilarating arcade quality game frequently.