Jungler

In Jungler, the player controls a snake-like ship moving around a number of mazes chasing three similar computer controlled ships. Being hit by bullets reduces the length of the ships. Ships are destroyed either when their length is reduced to zero or when they collide with a longer ship. Jungler was actually shown at the 1983 Winter CES by Gakken, but it was the only one of its planned titles which never saw the light of day.