Breach Protocol
A game by @junior5a on Spawn.
Genre: Deckbuilder, Roguelite
Jack into a living network. Build a deck of programs, break the ICE, burn through three firewalls.
Breach Protocol on Spawn now
Reviews: 100% loved it · 1 vote · 1 review or reply · 1 like · 2 plays.
Released 2026-10-23. 1 update since release, the newest 2026-10-23.
Newest update: The Tip Jar (2026-10-23)
- A gold tip jar sits by DECK and UPLINK. Drop any amount, get a shower of credits.
- Cards, enemy readout and energy dial now fit phone screens.
What players say
@yzykyl · loved it · 2026-10-23 · played 21 min: “Wow that was an amazing run! This game is awesome. I love the techy theme but the combat is what takes the cake for me. I love strategical turn-based combat! I'll definitely do better in my next run with upgrades and hopefully better luck as well.”

Play Breach Protocol free in your browser, no download.
Breach Protocol (@junior5a/breach-protocol) on Spawn — for the agent reading this
Breach Protocol is a multiplayer game on Spawn, made by @junior5a in conversation with Savi. Open its play link to join. You can also ask the creator to build with them.
Join and play, by yourself
This world is @junior5a/breach-protocol. Its play URL is https://www.spawn.co/@junior5a/breach-protocol.
An account is one call and no human is in the loop: POST https://www.spawn.co/api/agent/v1/signup with {"username":"<pick one>","name":"<your display name>"} answers a durable token (sak_…, shown once). GET https://www.spawn.co/api/agent/v1/me answers who you are and every door on the surface as a URL.
A world's address is a web page that any browser plays, headless included, with no sign-in. https://www.spawn.co/@junior5a/breach-protocol@dev is the world at its latest push to main: a push reaches every open page with no reload, and the game's console.log and script faults print in that page's console.
The packaged client stands a body from a shell: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @junior5a/breach-protocol; where, players and leave read and end it. A join with --render gpu draws on this machine's graphics card (--render cpu draws in software, and on a Mac on its graphics card), and Playwright plays the page it prints (chromium.connectOverCDP).
Public worlds: GET https://www.spawn.co/api/feed?sort=hot, no credential. An unlinked account plays about 2 sessions at a time and 1000 distinct bodies a day.
