Cardboard Box Assembler

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Wrap your brain around the six sides of a cube in this disorienting puzzle game as you guide Melvin through his own mental breakdown. In a twisty 3D world where gravity is relative, Melvin must collect keys and gems to unlock increasingly confusing levels as he journeys into the darkest parts of his mind. For you that means more than 30 levels of sanity-bending platforming puzzles, and the satisfaction of helping the poor guy find himself.


Cardboard Box Assembler is played with the keyboard.

Use the arrow keys to run left and right.

Press the Up arrow to climb ladders.

Press the Spacebar to jump.


You can use the mouse to rotate the world and get a better angle on your surroundings.

Totally stuck? Cardboard Box Assembler allows you to skip a level and come back later.

What are all those gems for? They unlock bonus stages which contain special items you can use in the game. Check the Unlockables section to use them.