One Night at Flumpty's
Another Five Nights at Freddy's fangame.
And no, not like the cheesy and unoriginal kind. It's done in a cartoonish yet well-done style, and the jumpscares are actually effective, in many people's opinion at least.
For more details, go check out the game yourself. It's free on GameJolt.
Random Idiot: Hey, did you see Markiplier play One Night at Flumpty's?