There should be a Fnaf game that's about being a nightguard at Freddy's (pre-murders/during murders) and instead of defending from the animatronics, you're defending from William, due to the fact you caught him walking out of the backroom after killing one of the kids.
Sure, it would be scary, but what I like most about it is that it's basically you're fending off from just a guy. Yes, a guy dressed in a big yellow rabbit suit who's addicted to murder, but just a guy nonetheless. In most situations, it would be giant metal demon-children in mascot suits who would tear you to shreds and stuff you in a suit, but in this, it's just a guy who'll stab you, nothing fantastically horrific, just a really threatening dude.
Of course, this is ridiculous and stupid, but I find it quite amusing.
