Cryptic Killers: Murder of a Millionaire is a cold case investigation game based around the murder of Chloe Whittle, a millionaire lottery winner found with a fatal stab wound in Redmond, UK. The case file contains 29 pieces of physical evidence, including newspaper articles, crime scene photographs, receipts, betting slips, police reports, train times, CCTV footage, phone and text records, a coroner’s report, map, witness statements and photographs. Players must examine the evidence and access an online police officer’s inbox to investigate the suspects and determine who is guilty. The game provides approximately 2 hours of gameplay and has a difficulty rating of 3.5/5, with online hints and answers available if required.