This is a game for iPhone and iPad users. Sort of like Flappy Bird where you tap the screen to make your bird flap his wings...in this situation, you tap the screen every time you want the character to take a step.
Nobody wants to break their mother's back...so the object of the game is to avoid stepping on cracks (and other obstacles). It is way harder than you think.
Added bonus: the main character looks like he should be in a Dire Straits video.
Free on iTunes give it a try!