The mind behind the popular math puzzle game Quento has released a pair of new puzzle games onto Android. The pair of games are called 0h h1 (a.k.a Oh Hi) and its companion game 0h n0 (a.k.a Oh No). 0h h1 is a simple logic game that deals with red and blue tiles. On the other hand, 0n n0 features numbers. Both games are quite good.