1983 · Shooter · Arcade · PC (Microsoft Windows) · Commodore C64/128/MAX · ZX Spectrum · BBC Microcomputer System · Commodore VIC-20 · Acorn Electron · Dragon 32/64
In this highly addictive top-down arcade shoot-em-up from 1982, originally for the ZX Spectrum, defend yourself from wave upon wave of deadly alien combatants using your Ion Thrust Drive and dual Plasma Disruptors.