This game is very similar to Electro Storm in several ways. It has the central firing base armed with 30 missiles; also the explosions are very short, almost flashes. The graphics are generally okay but colour is poor and stays the same throughout the game (in the original each sheet has a different colour). The missile traces don't split up, and they all tend to descend vertically. The game does contain missile-dropping planes and satellites, which move about very rapidly. The cross wire movement is jerky, especially under Kempston control. Control key play is poor, especially with the accuracy required, so the joystick version is better. This version is unexciting.
This is one of the older Spectrum versions. The inlay states all the control keys with the exception of 'fire', which is nowhere to be found. The cross hairs can be easily positioned with the responsive, well laid out keys. The game itself doesn't really speed as it progresses - just more and more missiles fired at you. Every now and then an alien flies over, dropping more bombs on you. Explosions are shortlived - just a flas of white and it's gone! A fair copy with sound and colour quite well used, but nothing to write home about.