Category:
Machine: ZX81 16K
Date: 1982
Original Publisher: Pleasantrees
Category: Arcade Game: Shoot-em-up
Machine: ZX-Spectrum 48K
Date: 1983
Original Publisher: Starzone Software (UK)
Date: unknown
Original Publisher: D. Boettcher (Germany)
Date: 1985
Original Publisher: U.S. Gold Ltd (UK)