Sigma 7 (1987)

Sigma 7 was released in 1987 for the ZX Spectrum 48K/128K. Published by Durell Software Ltd, the game was created by Mike A. Richardson, Julian Breeze, and Jane Richardson.

This arcade action title features isometric 3D graphics and supports AY sound. The gameplay utilizes a mix of flip-screen and diagonal scrolling, with controls supporting Kempston joysticks or redefinable keys. The game is designed for a single player.

The original price for the cassette version was £7.95. Sigma 7 was also developed for the Amstrad CPC and Commodore 64 platforms.

The game holds an average magazine score of 69.83%. It received the "Your Sinclair Megagame" award from Your Sinclair magazine and the "ZX Computing Glob Senior" award from ZX Computing.