Space is a hostile place, and the space craft in this game are out to get you. They attack at a fast and furious pace even during the early stages of the game.
But as you defeat one wave there are more to come, with deadlier weapons than their predecessors.
To defend yourself you have a laser and your own quick reactions to fight off the aggressors. The keyboard may be used (A = left, D = right, S = laser), or for better and faster results you have the option of joystick control.
The graphics are superb but unfortunately there were no instructions at all with my copy.
Still, an enjoyable' game and worth persevering with even without instructions.