Sounds like one of those "omg this video game is haunted and mario turns to the screen and says you're next!!!" creepypastas. It's not scary unless you're a big fan of that particular thing and are intimately familar with it, and even then, the premise is kind of lame.
Although that would make for an interesting actual game, maybe one on DS or something. Starts off like a normal [X genre] game, kind of cutesy and oldschool, but then in turns out the game itself is haunted or whatever and pulls little Eternal Darkness-style fourth-wall scares. Like Eversion, basically, but the horror is a meta thing.