1991 · Puzzle · DOS · Amiga · Amstrad CPC · Atari ST/STE
Booly is a puzzle game with a similar concept to Gem’X in some ways. You are presented with a top-down view of an array of inter-connected blocks, which are shown in a variety of colours. The aim is to turn them all to grey, but clicking on them will often cause a pattern of other squares to change to the next colour in the sequence as well.