Nebulus

Nebulus, also known as Castelian and Tower Toppler, is a computer game published by Hewson in the late 1980s for the ZX Spectrum, Amstrad CPC, Commodore 64, Commodore Amiga, Atari ST and Acorn Archimedes platforms. A version for the Nintendo Game Boy, Nintendo Entertainment System and Atari 7800 was also released. The US version, which was published by U.S. Gold, was released under the title Tower Toppler. The Nintendo versions were released as Castelian, in which the character is called Julius. There is also unfinished version for Atari XE/XL computers. In 2004 it was re-released on the C64 Direct-to-TV. Nebulus is a platform game with some distinctive unique features. Your character, a small green creature called Pogo, is on a mission to destroy eight tower that have been built onto the sea. The actual game play happens at each tower in turn. Pogo starts from the bottom and has to find his way up to the top. The towers are cylinder-shaped and have ledges on their outside, either... full article at wikipedia