In Who Done It? players assume the roles of detectives and sit around a four-person console with four telephone hand-sets. Players take turns calling in for clues which are delivered via their personal phone, and some clues are delivered via all-points-bulletins over a common speaker. Players record clues on a special playing sheet provided to track individual suspects in mysteries. Mysteries are electronically stored on a game console cartridge that is plugged into the machine. The game comes with one cartridge of mysteries and was originally intended to have additional cartridges available, but none were produced. Who Done It? is a bit like Clue with the possibility of individually-delivered evidence.