Education & Reference

Relay Tetris

Last updated 2026-08-27 · benchmark measured 2026-08-27 — deterministic & reproducible

A playable Tetris game simulated entirely using 1,465 electrical relays.

Is Relay Tetris production-ready?

Legit.Show scores Relay Tetris 68 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on Relay Tetris (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 91/100
• Accessibility — 94/100
• Security — 25/100
• Privacy — 25/100
• Reliability — 100/100
• Standards — 100/100
• Discoverability — 40/100

What we measured

• No Content-Security-Policy and no HSTS.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 77 ms to first byte.
• Returns a proper 404 for unknown routes.
• 1 of 1 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.
• Discoverable: OpenGraph image.

Who it's for

Retro computing enthusiasts · Hardware history buffs · Tetris fans · Educational learners

Visit Relay Tetris → · Alternatives to Relay Tetris → · How this was measured →