NandGame

NandGame turns computer architecture into a ladder of circuit puzzles. You begin with relays and a NAND truth table, reuse each successful component in the next challenge, and gradually assemble the vocabulary of a programmable machine. The premise is welcoming; the work still has teeth.

What is NandGame?

The opening board does not hand you a finished gate to inspect. It gives you power, relays, wires, and a four-row specification, then asks you to make NAND happen. That component becomes material for the next level, and the stack grows through familiar logic, arithmetic, memory, control, and computer-building territory. Independent players describe the pleasure of arriving at each larger device through pieces they built themselves, but they also flag the honest friction: truth tables help, latches can be ornery, and later puzzles reward patience more than guessing. It feels less like watching a lecture and more like apprenticing under a very terse silicon foreman.

What you can do there

• Build logic components from relays and earlier components
• Work from a NAND gate toward a programmable computer

Why we picked it

NandGame makes abstraction tangible without sanding away the struggle that gives the lesson its payoff. Reusing solved circuits means progress is both conceptual and visible: yesterday's puzzle becomes today's toolbox. The official scope is modest compared with a full computer-architecture course, which keeps the experience focused rather than pretending one browser game teaches everything.

How to get the most from it

Read the specification and truth table before moving parts. On a stubborn level, write the Boolean relationship on paper, test one input combination at a time, and open Level Help before searching for a complete solution. The page also publishes Space, arrow-key, and Escape controls for moving draggable items without a pointer.

Good to know

The official introduction says prior architecture or programming knowledge is unnecessary, but independent players still found several stages demanding. No live circuit session was performed here, so saving, device support, audio, broader accessibility, and runtime behavior remain unverified. The creator describes it as a fun exercise, not the full Nand2Tetris curriculum.

Who made it, and when?

Olav Junker Kjær is the credited creator or organization. The earliest supported launch date we found is 2018.