(Game spoilers below!)
A joke game, but a bit more of a joke than a game. Might be fun to expand this into an actual game with a randomized murder scenario or at least a more indepth story.
As it is, it's very short and linear: All you have to do is talk to all four villagers, collect all four evidences, and talk to Isn'tbelle. The detective will then make it pretty clear what the true answer is.