Each row and each column must contain the same number of 0 and 1. Three 0 or three 1 in a row isn't allowed ! Will you figure out the solution quickly enough and beat the best scores ? Puzzle IO also features : => A smart point system ! Each complete and valid row gives you 11 points and you get to multiply that by 20 or more ! But be careful, the multiplier will decrease over time ! => With Game Center implemented, you can now rank and compare Puzzle IO scores against your friends and challenge them to beat your highest score ! => Six levels of difficulty which will test your wits in more than one way ! ________________________________ You gain access to medium, hard, expert and nightmare levels by defeating the previous difficulty level. All levels are generated on the spot, you won't face the same grid twice ! ________________________________ We'll go back to the game now, see you in there !