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From Maxim Buckingham Arnold:
Colourcomb is a simple and hugely addictive puzzle-solving game. The goal is simple: to turn the entire grid green. FEATURES:-Easy to learn, hard to master.-Quick puzzles. Perfect for on the move.-2 difficulty modes and 5 grids with 18 levels each.-Levels are randomly generated, so different every time.-Completed every grid? Try beating your own times.-HD graphics for retina screen.-Made by one guy in his spare time (support indie games!)Each tile in a grid can be one of four or five colours. Touching a tile toggles it to the next colour in the sequence, and also toggles all adjacent tiles. Each level involves deducing the reverse moves that have been made by the computer. In this way you can revert the grid back to its natural, lovely green state.The levels start off very simple, to give you a chance to get going. After this youll have to apply your deductive powers to complete levels and unlock more grids.A simple concept that once mastered becomes perfect for filling in those little idle moments life can cough up from time to time.Made in Great Britain.Uses the excellent Cocos2D framework.