Nebulus

Nebulus is a platform game. The player character, a green creature called Pogo, is on a mission to destroy eight towers that have been built in the sea by planting bombs at the towers' peaks.

The actual gameplay happens at each tower in turn. Pogo starts from the bottom and finds the way to the top. The towers are cylinder-shaped and have ledges on their outside, either horizontal, forming stairs or connected by elevators. The most notable feature of the game is that when Pogo walks left or right the tower behind him turns clockwise or counterclockwise with a convincing sense of depth.

During the ascent, Pogo encounters many different enemies, mostly shaped like basic geometric shapes. Pogo can shoot some of the enemies, while some are impervious to shooting. Contact with an enemy knocks Pogo down to the ledge below. If there is no ledge below, Pogo falls into the sea and drowns.