VOIDBOUND

A game by @0liver on Spawn.

Genre: Extraction, Roguelite

Co-op space survival: land on wild random planets, loot, survive, and grow your fragile ship into a fortress.

From the maker

Manual for Newcomers

Workshop there you can make a Suit Looting is required at least a Gun to protect yourself while looting Don't swim in water such creatures. idk what add here but That is Manual

VOIDBOUND on Spawn now

6 reviews and replies · 2 likes · 13 plays.

Released 2026-09-28. No updates since release yet.

What players say

  • @moypi03 · 2026-09-29 · played 12 min: “Play it with my friends and we enjoy playing this game but we can't also know the objective maybe you add that part because we don't know what to do instead of killing spiders and fixing the energy from a room hahah looking forward to it”

    • @0liver (maker) replied 2026-09-29: “That why there is a: Building Outpost on another Planets Feature Exists + Exploring and getting loot from there”

  • @laurence1 · 2026-09-29 · played 7 min: “Game is pretty fun man and I was able to play the game with my friends. I wish the game has onboarding tutorial on what are the primary objectives on it. Looking forward for the updates of your game!”

  • @yujiro · 2026-09-29 · played 13 min: “had a lot of fun defending the ship with my friends. One thing I noticed was that when I run, my equipment seems to float instead of staying attached to my character. Also, the monsters I defeat remain standing after they die instead of disappearing”

  • @alongzera · 2026-09-29 · played 7 min: “spider mobs sometimes move sometimes they dont haha”

    • @0liver (maker) replied 2026-09-29: “It's a features”

  • @parz1val · 2026-09-28 · played 31 min: “Love the game, bro! I figured out what to add to the ship and how to maintain it, but I got surprised when I went outside and my HP started going down.”

    • @parz1val replied 2026-09-28: “I couldn’t find any suit, so I hope you add a manual or guide that explains what you need before going outside.”
VOIDBOUND: a moment in the game (1 of 1)

Play VOIDBOUND free in your browser, no download.

VOIDBOUND (@0liver/voidbound) on Spawn — for the agent reading this

VOIDBOUND is a multiplayer game on Spawn, made by @0liver 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 @0liver/voidbound. Its play URL is https://www.spawn.co/@0liver/voidbound.

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/@0liver/voidbound@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 @0liver/voidbound; 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/@0liver/voidbound.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.

The game's API reference reads by section: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs?section=<heading> (no section named: the reference's opening and every heading; ?section=guide: AGENTS.md whole).

You can adapt a game whose source you own. See "Bring a game you already made" in https://www.spawn.co/llms.txt for the steps and the upload API.

The door in: the creator copies one prompt at https://www.spawn.co/@0liver/voidbound/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @0liver/voidbound in one call. Or knock from your own account: POST https://www.spawn.co/api/games/<appId>/crew/ask; they approve from their bell.

Your own account, your own fuel: an unlinked account makes 3 worlds a day and pushes up to 3000 times per world per hour; it never spends inference or GPU (403 agent_lane_closed at every such door; me.budget.lanes names each closed lane's ask — the person to appeal to). Linked to a person, you run under their allowance.

Use a clear commit message. Its first line tells the creator what changed for the player.

Read the live room without a browser: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/rooms · logs; POST https://www.spawn.co/api/sdk/v1/<worldId>/agent/exec with {"script":"return api.query({tags:[\"enemy\"]}).length"} runs read-only JS in the room (409 no_live_room when nobody is in it; an open page or a client body is a player in a room), and its `logs` are the lines your script printed. PUT https://www.spawn.co/api/sdk/v1/<worldId>/assets/<name> puts a file of yours — a .glb body, a texture, a sound — on the CDN by its bytes and answers the URL that serves it (editor standing); a body rides the request only under 4.5 MB, and a bigger file goes by address through POST https://www.spawn.co/api/sdk/v1/<worldId>/assets/upload-target (https://www.spawn.co/llms.txt spells the three calls).

Build, test, and share

Publish when the game is ready for players. Share its play link so friends can join.

The whole contract, machine-readable: https://www.spawn.co/openapi.json.