nr. 01 is the brand new, unique and free puzzle game from redBit games. Nr. 01 uses numbers to push you to the limits of your brain even if it's not a math game. Nr. 02 in now out with new bubbles to puzzle you! [how to play]. When you switch two bubbles, they decrease by 1 point. All balls have to get to 1. But. You cannot move the bubbles with number 1.