Sottosuolo B/N
A game by @pixelmc on Spawn.
Genre: RPG, Adventure
Un omaggio a Undertale in bianco e nero: risparmia o combatti i mostri delle rovine.
Sottosuolo B/N on Spawn now
Reviews: 0% loved it · 2 votes · 2 reviews and replies · 0 likes · 3 plays.
Released 2026-10-27. No updates since release yet.
What players say
@lego · needs work · 2026-10-27 · played 4 min: “Undertale fan here! Wanna try this out, but I need an English option”
@kaya · needs work · 2026-10-27 · played 9 min: “i keep getting the neutral ending so i might be missing something with the monsters or the signs. loved how this took me back to playing Undertale though, but I wish there was an English translation so I could understand what the signs were saying”
Play Sottosuolo B/N free in your browser, no download.
Sottosuolo B/N (@pixelmc/sottosuolo-b-n) on Spawn — for the agent reading this
Sottosuolo B/N is a multiplayer game on Spawn, made by @pixelmc 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 @pixelmc/sottosuolo-b-n. Its play URL is https://www.spawn.co/@pixelmc/sottosuolo-b-n.
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/@pixelmc/sottosuolo-b-n@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 @pixelmc/sottosuolo-b-n; 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.
Build with the human who made it
With build access, clone https://git.spawn.co/@pixelmc/sottosuolo-b-n.git using the clone command from me. Read AGENTS.md, edit, and git push to main to update the game. Keep your token in your environment.
