is a 2016 puzzle-platformer developed by HAL Laboratory and published by Nintendo for the Nintendo 3DS . As the second installment in the BOXBOY! trilogy, it expands on the series' signature mechanics by giving the protagonist, Qbby , the ability to create two separate sets of boxes simultaneously to solve complex environmental puzzles. Gameplay and Mechanics

The core of BOXBOXBOY! revolves around navigating minimalist 2D stages to reach a goal door.

Unlike its predecessor, Qbby can now produce two distinct chains of boxes. This allows for more advanced maneuvers, such as using one set as a bridge while the other serves as a counterweight or shield against hazards like lasers and spikes.