In Valkyr the player is in control of a spaceship which can be moved left and right. The aim is to shoot the aliens flying around and collect the precious metal they are carrying. You are up against the clock and from flying UFOs . You must shoot loads of aliens to go to the next level, if you run out of time the `head` alien comes at you and kills you! There are three different stages. On the first two, the player must shoot as many aliens, while on the third the craft must be landed. The game then loops.