ColdCase Party is a browser based multiplayer murder mystery game designed for groups of 2 to 8 friends. No downloads, app installations, or game master are required. Players simply share a room code to begin investigating together on a shared case desk, analysing evidence, debating suspects, reconstructing timelines, and submitting a final verdict as a team. Cases typically last from 30 minutes to several hours, depending on the complexity of the investigation. The game works seamlessly on phones, laptops, and televisions. The first case is free, with no credit card required, and new cases are added regularly.