Like previous entries in the series, BoxBoy! + BoxGirl! is a puzzle platform video game. The main gameplay mechanic revolves around generating a chain of boxes to overcome obstacles and reach the end of the level. Each level has a limit on the number of boxes that can be created at a time. Boxes can be used for a variety of functions, such as forming bridges, blocking hazards, and pressing switches. In the single-player campaign, dubbed "A Tale for One", players control Qbby to create strings of...