Driller first appeared on the ZX Spectrum in 1987. This version is where it all began.
Driller‘s engine – called Freescape – was to go down in history as one of the first to make 3D gaming a real possibility.
The ZX Spectrum version runs at about ten frames a second at best. Eleven if you’re lucky. Not surprising considering what the game is doing.
So developer Major Developments kept the gameplay simple in the hope that it wouldn’t bore you.
By ‘simple’ that means: remembering about ten different key strokes to keep your viewpoint in shape… and also being quick on the draw when confronted by enemies.
Driller is surprisingly strategic when you get into it!
More: Driller on Wikipedia