Cold Case Summer is the ninth game in the long-running series of first-person adventure games from developer MDNA games. This is a point-and-click adventure game that involves exploring for clues and inventory items, as well as solving logic and inventory-based puzzles. The game's artwork is made from still photographs taken in Sweden, with node-based movement. As with previous games in the series, there is voice acting and background music. There is a new hotspot revealer making it somewhat easier to locate items of interest.