Although essentially a 'Missile Command' game, this one is rather altered. You defend six cities with a central laser tower, armed with 30 laser bolts. The attacking missiles are stopped, not destroyed, by hitting them on the tip. This is no easy task, considering that the explosions are instantaneous flashes. Pin point accuracy is required when compared to other versions. The key layout is probably as good as possible, but it still does not give enough control to achieve such accuracy. The graphics are fairly simple but reasonably smooth (not the explosions though). The sound is one of the game's better points. Being a bit different, it makes a change, but keyboard is out here too. Kempston option.
This is the only version to have several keys doing the same function, eg. Q to T is 'up'. Even so, I found the key positions to be badly laid out. Sound plays an important role in this game. Alien missiles tend to change direction quite often, making life even more difficult and the explosions are ultra-short. For some reason the screen area for play seems to be very limited. I don't know why - perhaps it is just crowded. Keyboard response is good as is the cross wire movement. Once all the cities have been destroyed, a great flashing explosion takes place. A fair to poor copy of the arcade version, and I thought, the worst of the bunch.