This is a tale of plunder, involving pillaging goodies from hapless civilisations throughout space. There are two screens. Incidentally, Cuthbert has to pilot a shuttle to pick up fuel pods, ferrying each one back to the mothership before collecting another. Whirling "propellers" whizz across the field of play at variable speeds; these must be avoided or blasted.
The longer you hang on to a shuttle (i.e. a life) the more numerous the missiles become. When sufficient fuel is on board it's time to collect the apparently extremely desirable objects raining down from the sky, still riding-out the same defensive system, until the going gets too hot and discretion dictates a departure for pastures new.
This pattern is frequently punctuated by an unusual phase. Briefly, you need to match one set of co-ordinates with another then return to the first value. The catch is that the numbers are increased/decreased by using a different joystick/cursor control each time. Naturally a life depends on completing the exercise within a given time.
Twelve levels (you may skip the first seven) should provide challenge enough for any budding Cuthbert. Very colourful, but little in the way of spectacular graphics and sound.