A shoot-em-up very similar to the Famicom game released later the same year.

A very simplistic looking and dated but enjoyable game. You control a transformable Valkyrie as you fly the the blackness of space shooting down enemies with either your gun (a white dot) or missiles (several white dots).

As the scenes change the enemies change but the black backdrop stays the same. The levels almost seem to loop.

There is only one musical track, not taken from the series' soundtrack, and it plays on and on which can get iritating. As I said at the start, everything about Countdown is dated; the sound, the music, the graphics, the gameplay but it is still enjoyable. But maybe only for a quick go!