This is the concept behind Bristol-based developers Joe Williamson and Sam Twidale's Werewolf Tycoon.
It's a stealth game that has you hiding behind bushes as just a big pair of werewolf eyes in Werewolf Park.
People stroll past as they do in parks, and when you see an opportunity, you pounce.
All you need to do is eat people, and then hop back into the cover of the bushes. But if you let witnesses escape then the media will arrive.
And if they get away with photos that prove your existence then, well, what happens after that won't be healthy for you.
Werewolf Tycoon started out as a quick game jam effort from the two creators for their last year at university.
Now they've released it for free on Android. It will be also be coming to iOS soon.
Check out its website for more information.