The M comes with a collection of stunning images to choose from. There are a few options you can choose on the first screen but you can change them at any time. Firstly, you get to choose from a 16-piece or 25 piece puzzle. Secondly, you can choose a jigsaw mode or a slider puzzle mode. Finally you can choose the difficulty level of the game. With the difficulty level increasing, other challenges are added to make the puzzling more fun.