In Fnaf 3, you need to beat all these minigames to get the good ending when you beat night 5. Pretty much everyone knows about these, but it's still considered an easter egg. each minigame ends when you enter a door that says "exit" but there are also alternate endings to the minigames. there's also a hidden minigame in which you play as the puppet. After you beat a night in fnaf 3, you're brought to a (not a hidden easter egg) minigame which you play as freddy after night 1, bonnie after night 2, chica after night 3, and foxy after night four. each of these end with you following a purple freddy into an upper room next to an exit, where it says error on the top right corner, and when you try to walk away, the purple guy (google it) runs over and dismantles the animatronic, with the animatronic parts scattered along the floor. after night 5, you play as a crying kid's ghost that purple guy supposedly killed and when you walk in the same room as the previous nights where it said error, when you go in, there's a wall of 4 other kid's souls blocking the exit and the soul you play as in the room. the same purple guy is in the room, but he's running from you when you go toward him. After he turns around a third time, he runs toward the empty springtrap suit in the right side of the room. Once he's in springtrap, he gets up and starts taunting the souls, then the wiring causes him to bleed to death and once he's near death, the kid's souls fade (this is all 8-bit) ending the minigame. Then you get the good ending or bad ending (you need to complete all the secret minigames to get the good ending) and then you're sent back to the main menu screen, and there's a playable 6th night called "nightmare". After you beat it, you don't get a minigame, but you do get an on screen newspaper that says on the 6th night, that due to faulty wiring, fazbear's fright, the place you play the game in, burned down overnight.