Ultrasoft, Inc.

Quadrax
DOS

DOS

ZX Spectrum

ZXS

Publisher

Quadrax

Shadowkeep
Apple II

Apple II

Developer

Shadowkeep

The Serpent's Star
Commodore C64/128/MAX

C64

Apple II

Apple II

Atari 8-bit

Atari8bit

Developer

The Serpent's Star

The Mask of the Sun
Commodore C64/128/MAX

C64

Apple II

Apple II

Atari 8-bit

Atari8bit

Developer
Publisher

The Mask of the Sun

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