NAND-16

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A 16-bit computer built from 277,248 NAND gates, running OS and Tetris.

byMatt Shumer

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Description

A browser-based 16-bit computer built entirely from 277,248 NAND gates. It includes a functional CPU, memory, and OS, and is demonstrated running a playable version of Tetris with visible signal flow.

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Details

Why this is interesting: An incredibly ambitious computer simulation designed by AI, featuring over 277,000 gates and running a custom OS.
Attributed to: @mattshumer_
Built with: Opus 5.5
Links: somethingbig.ai
View tweet
Tags: #simulation #computer-architecture #nand-gates #educational

Discovered: X
First posted: X · Sep 27, 2026
Listed: Added just now
Build: Strong
Models: Strong

Prompt

build a working computer from scratch, entirely in code, starting from individual logic gates. design the CPU, the memory, an assembler, a tiny operating system, and a game that runs on it. everything has to be real, the game has to run on your gates, not in javascript pretending. visualize the whole thing in 3D so i can play the game, then zoom all the way down through the chips into the gates and watch the signals flow while it runs. treat it like you're proving you could have invented computing yourself. go all out.

Source

NAND-16

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Timeline

NAND-16

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