The great puzzle game will keep you entertained for hours as you try (and a lot of times fail) to progress in the game. You may get frustrated, you may put down your iPhone or iPad in anger, but the game will keep you coming back for more because you sure as hell aren't going to let a game get the best of you. The sheer force of will required to continue you in a well-crafted puzzle game is something a lot of gamers have a love-hate relationship with.