Survivors

Survivors (also known as The Survivors) is a game published by Atlantis Software in 1986 for the ZX Spectrum. It was ported to the MSX, Atari 8-bit family, Commodore 64, Commodore 16, Acorn Electron, and BBC Micro (all in 1987) and the Amstrad CPC (1988). It is a puzzle game based on the "rocks and diamonds" mechanics of Boulder Dash.