Working title: Crossfire. It is a video game for two players inspired by chess-boxing.

One player must navigate a Mario-type character across a gigantic crossword puzzle plane (gigantic because its boxes are gigantic in length and width) and reach a flag in a set amount of time – a basic 3D platform game challenge. Travel on white boxes. Fall into a black area and you die.

Meanwhile, the other player tracks player one's movement on the crossword puzzle in 2D and tries to solve it accordingly. Decipher a clue correctly and the letters in that word crash down on player one's crossword plane as gigantic polyhedrons, impeding player one's movement or squashing him or her to death.

If player one reaches the flag, the following puzzle plane contains less white boxes. If player two prevents player one from reaching the flag, the following puzzle features more challenging clues.

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