Octopus © 1981 Nintendo Co., Ltd.
The object is to recover treasure from a sunken ship without getting caught by an octopus. The player must aim his diver under water by jumping off the side of a boat. Each time the octopus touches the player, one life is lost. A point is awarded for each portion of treasure retrieved from a sunken ship, and three additional points are awarded for evading the octopus a second time and returning to the boat. The game speeds as it progresses, and additional lives are granted at 200 and 500 points. In Game B, the octopus is quicker and there are more hazards.
Octopus was released on July 16, 1981 in Japan.
It is considered to be one of the most complex Game & Watch games ever created.