Based on 1983 Atari coin-op.PC releases: Hercules, CGAN.B. Not related to the MSX or NES/Game Boy/Game Gear/Master System games of the same name.
[1] Licensed conversion of the Atari coin-op, which was based on George Lucas' blockbuster sci-fi film STAR WARS.[2] Magazine Publisher: Stampede no. 2, August 1990.