Simple, but interesting. I'd agree with the 'creepy' label you put on it. The sound effects really added to the mood.

My main suggestion would be to add some sort of progress indicator(ideally one that doesn't break the mood, maybe some sort of "alright just a few more questions" narrative)- I have no idea if I'm at the end of the game or not.
Still, it had me hooked! I kept trying over and over again- like a spooky game of memory.