In ChromaWerks each player uses 9 double sided cards (shuffled) to make a 3x3 grid. Each quadrant of each card is machinery of a different color and players must take turns completing one of four actions to try to get all four center blocks to be solid colors: Red Gears, Yellow Drive Belts, and Blue Pipes. There are also sections of 'broken' machinery which may not be used to complete machinery.
Note: This version of ChromaWerks does not have a wrapper for the 18 cards.