[2] The player's task is to pilot a starship through a series of squared solar cell matrixes inside a rack.
During challenge racks there are no fireballs; the goal is to clear the entire field before the time runs out.
Completing each Challenge round awards a letter, to form the mystery word Helios.
[4] The game would later be released on the Atari 2600 console and was also developed as a Commodore-published cartridge for the Commodore 64 computer in 1983.
[2] An Atari 5200 port program written by Van Tran (of Wabbit fame) was completed but never released.