Aquanaut (1989)

From cover From the company that brought you The Kristal comes... AQUANAUT an inter-active arcade adventure, written in the spirit of 1940's cinema heroes, but taking place deep under the ocean, in a maze of underwater caverns and then in the fabled city of Atlantis. Aqyanaut is a fast-moving new game in which you must: SWIM 20 miles underwater; BATTLE... Incredibly nasty creatures; FIND... the lost city of Atlantis; AVOID... Mutant sharks, swordfish and jellyfish; HUNT... for hidden clues; SMASH... the Ramanishi; SHOOT... your way to victory; SAVE... The World. Surmount the perils of the deep with clever strategy and slick joystick control, and the underwater world can be yours...