Dirk Valentine is a steampunk-themed platformer from Nitrome. In the game, you play as the titular spy, who wields a gun that shoots chains. It's your mission to infiltrate the Fortress of Steam with this top-secret weapon. The gun has a variety of uses, including killing enemies, creating platforms, collecting medals, and breaking locks. Your primary goal in each area is to reach the exit, but collecting medals and freeing captives along the way will give you extra points.