This is a game to cater for all tastes. There is enough high speed slaughter to appeal to the arcade freaks among us and there's an element of thought required to suit the brainier types.
In order to provide this mix, the author has come up with a slightly contrived scenario. You pilot a spaceship called Starion which has the unusual ability to travel time. You must travel through different time zones correcting the havoc wrought by some nasty aliens.
These aliens have removed items of historical significance from their correct time zone and moved them to another. You must return these items to their correct time. The first step is to destroy aliens. As you kill an alien, you are given a letter from the name of one of these items. When you have all the letters, you must find the appropriate time zone. Get it right and your fuel and oxygen are replenished and you move onto the next type of alien.
The use of graphics is excellent with fast, flicker free, 3D vector graphics. The screen gives a view out of the front of your ship, the stars give a superb feeling of motion.
This is a graphical tour de force which is testing both for the reactions and the brain. It's a shade pricier than many Spectrum games but it's worth every penny.