Decent pasta imo, not a Sonic fan so it didn't really appeal to me, let alone creep me out, but it was mostly original, esp. the touch at the end with the plush on the player's bed. Also, as with most Minecraft pastas and Herobrine (while I love the character, there's no doubt he's WAY overused), most Sonic pastas seemed to focus on the Tails Doll, so I'm sure the Sonic/creepypasta fans who were getting bored of that one character being used for most Sonic pastas were happy to see something fresh.
I have watched let's plays of it. I think that, in it's time, it was decently original. The only problem with it is the legacy of too many spinoff and related stories. Just hearing Sonic.exe being brought up in relation to a new pasta make me cringe. I don't haunted games and systems have been depleted as a source for pasta potential. But, there is a problem with most new pastas that try to be about haunted games using the same set of plots outlined by Sonic.exe, BEN, and MARIO.