Unsolved Crimes is a detective adventure game for the Nintendo DS featuring a rookie detective in New York City's homicide division. Players investigate eight separate cases while unraveling a central mystery linked to the disappearance of model Betsy Blake, who is associated with the player's partner, Marcy Blake. The game combines exploration and puzzle-solving elements in a narrative-driven experience.
The game is set in New York City. The player is a rookie detective from the homicide division. There are eight cases in the game, and one larger case divided into sections. In this case, a model named Betsy Blake goes missing. She is the sister of the player's partner, Marcy Blake.