Abstract puzzle game - terminal version

 Chroma is an abstract puzzle game. A variety of colourful shapes are
 arranged in a series of increasingly complex patterns, forming
 fiendish traps that must be disarmed and mysterious puzzles that must
 be manipulated in order to give up their subtle secrets. Initially so
 straightforward that anyone can pick it up and begin to play, yet
 gradually becoming difficult enough to tax even the brightest of
 minds. Have you got what it takes to solve Chroma?
 .
 A graphical version of this game is available in the 'chroma'
 package.