You're a hero again defending a remote asteroid from enemies curiously like those in Battlezone. All you have is a tank, cruddy cannons and the odd anti-tank missile. Sounds more like Battiesone eh? It's almost like a game of hide and seek. The enemy hides and you seek. Boy, do those tanks know how to hide? Yes they do. So why bother? Just stay where you are, let them come and find you. It's much quicker.
The graphics are OK - the whole screen is blue and the tanks and other weird square scenery are white. The game, though, is not very exciting. It manages to be both dead easy and frustrating! You see nothing and from nowhere something gets you from behind then the program has the cheek to say "You have zapped." I wouldn't have been zapped if it didn't cheat!
There's nothing here, except for those with a deep interest in looking for things. And for those with patience. Save the money.