Chip BuilderGet the game

A puzzle game by bitheap

Build a CPU.
One gate at a time.

Chip Builder is a story-driven puzzle game about digital logic. Wire transistors into gates, gates into adders and memory, and memory into a working CPU you program yourself. Then take your design to the fab and make a real chip.

Developed and published by bitheap GmbH, Zürich, Switzerland. For Windows. Rated PEGI 3 and ESRB Everyone.

Chapters
10
Levels
43
Working CPU
1
A chip engraved with the Chip Builder logo

The trailer

See Chip Builder in action

From a single switch to a working CPU, in under a minute and a half.

The story

Day one at ChipCorp

You have just badged into the Logic Design Lab as a junior engineer at ChipCorp. Your mentor, Dr. Ada Chen, has one goal for you: build a working CPU with your own hands, starting from a single switch.

Over the following months you move through ChipCorp's labs, from arithmetic and sequential logic to memory engineering and the ALU testing chamber. Each lab adds a new layer to the machine you are building, until the diagrams on Dr. Chen's whiteboard become a working CPU, and then a real chip.

A level briefing from the ChipCorp lab

The journey

10 chapters, from transistor to chip

Each chapter is a lab at ChipCorp. Each level teaches exactly one new idea, and it stays with you because you built it yourself.

  1. CHAPTER 0

    Silicon & Switches

    Build logic out of the only thing a chip really has: transistors.

  2. CHAPTER 1

    The Spark of Logic

    The gates that process 0s and 1s.

  3. CHAPTER 2

    The Art of Combination

    Adders, multiplexers and decoders.

  4. CHAPTER 3

    Memory Takes Hold

    Latches, flip-flops and registers.

  5. CHAPTER 4

    The Storage Vault

    RAM, ROM and address decoding.

  6. CHAPTER 5

    The Brain's Calculator

    The ALU, the arithmetic and logic powerhouse of the CPU.

  7. CHAPTER 6

    Building the Brain

    Program counter, control unit and datapath.

  8. CHAPTER 7

    The Language of Machines

    Machine code, assembly and algorithms.

  9. CHAPTER 8

    The Chip Architect

    Pipelining, caching and ISA design.

  10. CHAPTER 9

    From Sand to Silicon

    Manufacture the chip you designed.

Screenshots

On the bench

Wiring a complete CPU on the circuit board
Building an adder from logic gates
All tests passed, with fireworks over the board
A silicon wafer in the fab chapter
Building RAM from registers
An exploded view of a packaged 3D chip

How you learn

Learn by wiring it yourself

Interactive circuit board

Pick parts from the palette, drag wires from pin to pin, and watch signals propagate live as you build.

Real truth-table verification

Every circuit is graded against the exact behaviour it has to produce. No shortcuts, no guessing.

Lessons that tell a story

Each chapter opens with a briefing from the ChipCorp lab, with hints and a step-by-step mode whenever you get stuck.

From sand to silicon

In the final chapter you take your design to the fab: grow the crystal, lay out the transistors and package a modern 3D chip.

Play your way

Choose Guided, Normal or Hard, earn XP, and climb the ranks from Intern to Chip Architect.

Achievements

Ten achievements, one for your first circuit and one for each chapter you complete.

Get Chip Builder

All 10 chapters and 43 levels, for Windows. Wire your first gate today.