A magnificent example of what can be achieved with some vector graphics and a bit of imagination. The basic premise of the game was to guide your triangular spaceship through a series of levels, usually cavernous, to collect a ball, via a tow-rope, and escape to the surface.

The levels were usually guarded by strategically placed, single-pixel-firing guard posts and though these were trouble, they were not the player's worst enemy. Gravity was the thing you had to fight against - constantly. Small, controlled bursts of thrust were needed to stop you impacting on the cavern walls and this is where the game's designer used his imagination.

Oftentimes you were forced down small tunnels - horizontal at times - and the only way down them was to get some speed up and blast through as quickly as possible before gravity pulled you down. This was tricky enough without your heavy ball slung beneath you but with it attached it was murder.

Just getting out of a vertical tunnel was difficult enough because the physics model employed in the game was superb and all it took was a couple of over-enthusiastic bursts of thrust to get a swing on the ball that also threw your ship all over the shop. All this gameplay for a mere £1.99 as well.

Thrust did well enough to warrant a follow-up but sadly, Thrust 2 just didn't have the class of the original. A truly splendidly simple game built on pure addiction. Remove your hat in its presence.