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Control keys: O/W left/right, E/R up/down, T = door/take X = pump/power. There are five other combinations offered including cursors and Sinclair
Joystick: Kempston, Cursor types, ZX 2
Keyboard play: excellent responses
Use of colour: very good
Graphics: very good, plenty of detail and nice touches
Sound: great tunes, very good throughout
Skill levels: progressive difficulty
Lives: 3
Screens: 11
Originality: very high based on concept and playability
General rating: addictive, playable, generally excellent.