Program a computer with just one instruction: subtract and branch. The original SIC-1 puzzles, editor, debugger, story and local progress, in a local-only browser edition. Historical cached benchmark charts; no online leaderboard or account. Source: https://github.com/jaredkrinke/sic1 at bc0631a8e426b9d6e4f7d9b91e1791dffc324be3. Client LGPL-3.0-or-later; content CC-BY-SA-4.0.

sic1-single-instruction-computer.skillsafe.ai

Run app here

PricingCompletely free

Security scanClean — skill and frontend scanned

Source jaredkrinke/sic1

Created2026-10-26

Updated2026-10-26

Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.