ManualThe Volfied manual has instructions for loading the game both on ZX Spectrum and Amstrad CPC, but these versions were never released, even though the game itself was simple enough to stand a conversion to most 8-bit formats.
SoundThis game uses two sound devices. The intro music and the music between the levels are produced by your sound card, while the in-game sound effects are made by the PC Speaker. This technique is shared by another Taito conversion, Qix.
Information also contributed by Игги Друге