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Private company

J. K. Greye Software

Software companies of the United Kingdom

J.K. Greye Software was a British software company set up by J.K. Greye in early 1981 and six months later joined by Malcolm Evans after they met at a Bath Classical Guitar & Lute Society meeting in Bath in 1981. They produced computer games for the ZX81 and ZX Spectrum home computers. They struck gold with the revolutionary 3D Monster Maze, the first 3D game for a home computer, which John Greye suggested they produce after seeing a basic 3D Maze that Evans had programmed in Z80 Assembler.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1981Founded1
  • Industryvideo game industry1

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J.K. Greye Software was a British software company set up by J.K. Greye in early 1981 and six months later joined by Malcolm Evans after they met at a Bath Classical Guitar & Lute Society meeting in Bath in 1981. They produced computer games for the ZX81 and ZX Spectrum home computers.2

Products and brands

This softography is a merged list between J.K. Greye Software and J.K. Greye Enterprises Ltd.

Sinclair ZX81

10 Games for 1K ZX81 (1981)

1K Breakout (1981)

Catacombs (1981)

Read the full text

3D Defender (1981) (later re-released by N.G.S.)

3D Monster Maze (1981) (later re-released by N.G.S.)

Pyramid (1981)

Starfighter (1981)

ZX81 Artist (1981) (these last three released on one "gamestape")

ZX Spectrum

Ufo (1982)

Minefield (1982)

Invasion (1982)

Kamikaze (1982)

The Arcadian (1982)

3D Vortex (1983)

4-Star (1984)

From Wikipedia’s article on J. K. Greye Software, shared under CC BY-SA 4.0.3

Timeline

  1. 1981Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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