Turing Tumble VR

Turing Tumble VR is a puzzle game about building mechanical computers and seeing how they work. You place parts on a board to direct blue and red marbles through computing machines, using switches and their connections to perform operations.

Build with marbles

The board uses six types of mechanical parts. Together, they form a Turing-complete set: the machines can perform any task a computer can, given a board large enough. At its actual size, the board can already add, divide and exponentiate numbers, compare and count, perform logic, produce patterns and more. The VR board is as large as a small building.

Solve the challenges

Puzzle mode includes 59 challenges. They begin simply and become difficult, then extremely challenging, with the later puzzles posing a test even for expert programmers. There is no single written answer: any machine you build that produces the required behavior is accepted. Solving puzzles unlocks additional features for both puzzle mode and free play.

Free play

In free play, you can invent and run millions of machines, with the complexity limited by what you choose to build. You can also revisit solved puzzles to develop and test different solutions.

Learn by playing

The game is designed to show how computer programming works through experimentation, without requiring prior knowledge of computer engineering or advanced mathematics. It can be played from age 8; children aged 8–12 have solved the first 20 to 30 puzzles, while younger children can enjoy the first 10 challenges and building their own computers. The 59 puzzles are the first set, and playing through all of them can take dozens of hours.