[1] The main gameplay mechanic revolves around generating a chain of boxes to overcome obstacles and reach the end of the level.

Boxes can be used for a variety of functions, such as forming bridges, blocking hazards, and pressing switches.

[2] The two-player campaign can also be played individually by switching back and forth between controlling Qbby and Qucy.

[6] A third campaign can be unlocked, "A Tall Tale", in which players control Qudy, a rectangular character that can rotate horizontally and vertically.

This campaign features an extra set of puzzles that take advantage of the long, rectangular-shaped boxes that Qudy can create.

[7][2] The levels feature collectible crowns which reward players with medals, which can be used to buy bonuses such as cosmetics, power-ups, and challenge stages.

[10] Reviewers praised the new co-op mode, highlighting the addition of puzzles made possible by the multiplayer campaign.

[2][6] The unique gameplay of Qudy's campaign were also well received in keeping the game engaging.

[6] Others found the relaxed difficulty a good complement to the simple controls and visuals that the BoxBoy!