Space Snake really should be called Subterranean Snake, since the object of the game is to guide your reptile through tunnels while gobbling up the eggs which lie on the bottom.

The snake in question, consisting of shell-like segments, first appears speeding through the cosmos. Using the 'A' and 'Z' keys to move up or down, you must avoid the many 'satellites', which block the entrance to the cavern.

Should you survive these obstacles, your snake goes on an underground roller-coaster ride as you climb and swoop trying to avoid the tunnel's sides. If you eat five of the eggs, you emerge at the other end to negotiate more satellites and another tunnel, this time narrower and faster. If you suffer from claustrophobia, play a different snake game!

Space Snake's colour is good, changing every time you lose one of your three lives. The graphics are uncomplicated and very sharp.

An added bonus is that, since you use only two keys, your right hand is free to do other things. You might try charming the snake with your clarinet.

Although the game relies on a simple idea, it is executed very well and is good value for the unexpanded Vic.