8-14 players get thrown into a mansion. One of them is the murderer. The others are innocent, and must figure out who the killer is. When somebody dies, their body lies on the ground for someone to find. When a dead body gets stood on, it announces that the player has died. E.g: "TeamTyler's body has been found!" The innocents must all find 10 iron ingots, and they are given a bow, to shoot the murderer. If an innocent shoots another innocent, they drop the bow, for someone else to pick up, even the murderer can pick it up, to stop others from getting it. The game ends after 10 minutes, when the killer dies, or when everyone is dead. So, yea. Mystery Murder!
Think of it as a big like some G-Mod game or something. I am sorry, but it is really hard for me to explain. :(