Imprisoned in a maze of caves, embedded in the planet of Doom, you must collect five keys to escape the evil clutches of the villainous Lord of Darkness whilst avoiding the usual selection of traps and flashes.
Well, if that induces the same feeling of impending comatose in you as it did in me, you'll be surprised.
Caves of Doom, with its little boiler-suited hero, may look like a poor-man's Jet Set Willy II, but it's a battle of dexterity and wits as you zoom through forty locations, dodging marauding minions, in pursuit of your ultimate escape.
Well, I'm told there are forty locations - I couldn't even get through half that number. Cheaper than the price of a cinema ticket, it'll certainly keep you glued to the screen for a helluva lot longer!