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Discover how computers work

Computers are full of ingenious logic and astonishing creativity. They're everywhere, but most of us don't understand how they work. With Turing Tumble, you can see for yourself how computers work: The logic isn’t hidden inside a computer chip, it’s right there in front of you.

The Parts

Build computers with six different types of parts.


Direct balls in one direction, either to the left or to the right.


Let ball paths cross over one another. Balls come in one side and exit on the opposite side.


The bit adds logic. It stores information by pointing to the right or to the left, like a 1 or 0.


When the computer’s objective is complete, the interceptor is used to stop the computer from releasing any more balls.

Gears and Gear Bits

The gear bits are mind-bending, but they add a whole new level of functionality. They also make the computer Turing-complete, which means that if the board were big enough, it could do anything a regular computer can do (in theory!).

System Configuration

Turing Tumble comes with enough parts to build some impressive machines.

  • Computer board
  • Computer stand
  • 30 Ramps
  • 10 Bits
  • 8 Gear bits
  • 6 Crossovers
  • 4 Gears
  • 3 Interceptors
  • 1 Presser
  • Puzzle/comic book with 60 puzzles
  • 20 Red marbles
  • 20 Blue marbles
  • 30 Counterweights
The Puzzle/Comic Book

60 puzzles are woven into a comic story where each puzzle brings Alia the space engineer closer to rescue from a forgotten planet.

How to Play

Easy to learn, hard to stop.

Select a puzzle
 The goal of each puzzle is to build a computer that completes an objective. For example, below is challenge #1. The objective of this puzzle is to make all of the blue balls (and only the blue balls) reach the end.
Build the starting setup
 Many of the puzzles require parts to be placed in certain positions to begin. For this puzzle, the starting setup looks like this once built:
Plan your solution.
The Turing Trust, started by Alan Turing's closest family, strives for a world of equal opportunity with technology-enabled education for all. They provide reused IT equipment, loaded with educational resources, and training to schools in sub-Saharan Africa.



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