This game is yet another budget offering aimed at those of us who aren't prepared to shell out too much money on games. After due consideration, I must say that this is the worst game I've ever had the pleasure to play.
According to the cassette insert you have been left at a distant outpost of the empire and are tasked with protecting the remaining deposits of neutronium. In order to achieve this goal, you must shoot the space ships which patrol the skies and avoid wandering land vehicles. With a single prod of the fire button, a missile is set both vertically and horizontally. The space ships will bomb you, given half a chance, but the land vehicles simply collide with you.
The screenshot shows a grid of mole hills with paths between them. You may move your vehicle along any of these paths. The land vehicles move at random from side to side down one of the paths. You either shoot the ships or vehicles and accumulate points. When you score sufficient points, you move onto the next level. Higher levels simply seem to be faster rather than more difficult.
The game seems to be full of oddities. If the space ships collide with each other, for example, they are destroyed and you gain the points. The graphics and sound are just about average but the gameplay is terrible. It's just a test of endurance rather than skill. Notwithstanding the price, this is a game to avoid.