Set some time in the future, sports are played in huge arenas in space. Pyramid Of Time is one such game.

When the brilliant title screen appears you have the option to choose a one or two player game.

Each contestant then jet-packs down to the arena and boards his chosen vessel from the three available.

The game continuously cycles between two main stages: the Pyramid screen and the bonus grid screen. Entering the former sees the central spinning pyramid surrounded by four layers of revolving diamonds, which randomly turn into glowing gems and planets. Shooting the gems gains points, and blasting a planet alters its colour to that of the contestant's ship.

Warping to the bonus level causes the grid to appear. This is a strange, colourful pulsating network of pathways, along which the two vessels move. During this section, the object is to collect the available gems before being returned to the Pyramid screen.

The game doesn't seem to have any particular aim, and it takes some time to figure out just exactly what you're supposed to be doing. Nonetheless, it's strangely addictive and is extremely well presented - especially in the sound department.