- 4 colours, 1 puzzle, can you fill it? Fill each of the piece of the puzzle with 
   one of the 4 available colours. Don’t let pieces of the same colour touch 
   (share a side). Try and use as few colours as possible when solving a level. 
   Many of them can be completed in 3 or less. (Check the level select menu to 
   see which ones you have left.)
 - Instructions and controls are in-game.