This game has Eight Nights and each night should last 4 minutes and 30 seconds before it reaches 6 AM There is also a hidden night which makes this game have Nine Nights.

As for difficulty well the game is made to be mostly manageable at Night 1-3 but it adds more creatures after some nights and a Shadow Creature named Shadow Vex becomes more common as the nights go on. (Don't worry he won't crash your game.)

Just something i felt like writing.