Decktective: Nightmare in the Mirror is a co-operative investigation game, featuring a 3D crime scene. Players must solve a mysterious case. They play their cards to share information, discard cards that they think will lead them the wrong way, discuss the clues they find with the other players, make hypotheses and deductions to find the solution! At the end of the game, players must answer several questions: Each correct answer is worth points. The more points they get, the better their outcome.