Caves of Doom (1985)

Platform game, where you can move up/suspend your character, avoiding enemies. Exploration based game as most screens have more than one exit.

Storyline

Whilst exploring the planet Doom you were captured by the guards of the ruthless Lord of Darkness. You are now imprisoned in caves deep within the bowels of Doom but are determined to escape. To do so you must find five keys, one of which is in three pieces, which are scattered around the caves. However, the odds are against you as the Lord of Darkness has laid traps in the caves and has sent many thousands of this bloodthirsty minions to thwart your mission. You are unarmed and therefore, must use your wits to avoid certaind death on Doom.