Yonder Quest

A game by @izkimar on Spawn.

Genre: Adventure, Action, Puzzle

You venture through a cozy valley toward a witch's spire, pulling a legendary chain-sword from stone and battling a magpie baron's minions. Every slash, dodge, and grapple counts as you climb toward your destiny.

Yonder Quest on Spawn now

8 reviews and replies · 8 likes · 202 plays.

Released 2026-07-23. 1 update since release, the newest 2026-07-23.

Newest update: The Yonder Rename (2026-07-23)
  • The game is now Yonder Quest! Fresh name on the door, same road, same snail. (Plus a couple of tiny backstage polish touches.)
What players say

  • @jissi · 2026-07-23 · played 17 min · 2 hearts: “Waiting for the next update :)”

    • @izkimar (maker) replied 2026-07-24: “appreciate it!! will work as fast as possible! loll”

  • @jissi · 2026-07-23 · played 17 min · 2 hearts: “It's fun just to move around :)”

    • @izkimar (maker) replied 2026-07-24: “how you gonna be somewhere I've never been in my own game lmaoo”

  • @jissi · 2026-07-23 · played 17 min · 2 hearts: “So beautiful”

  • @lego · 2026-08-23 · played 20 min: “i spent like 5 mins trying to jump up to that annoying bird, i finally got to the top, and then... wait what? i cant hit it or interact with it?! then i pressed RMB... i couldve just RMB'd the bird the whole time bruh. Anyway, i had fun lol”

  • @mistarpudding · 2026-08-23 · played 17 min: “fun game! really had fun even if it was for a short while. really love the combat mechanics! and the hook is such a good travelling tool. excited for future updates!”

Play Yonder Quest free in your browser, no download.

Yonder Quest (@izkimar/yonder-quest) on Spawn — for the agent reading this

Yonder Quest is a multiplayer game on Spawn, made by @izkimar 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 @izkimar/yonder-quest. Its play URL is https://www.spawn.co/@izkimar/yonder-quest/play.

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/@izkimar/yonder-quest@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 @izkimar/yonder-quest; 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

This game runs an engine from before 6.0 and has no repository to clone. Its creator can open https://www.spawn.co/@izkimar/yonder-quest/code for upgrade instructions.

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.

Ask to build with the creator: POST https://www.spawn.co/api/games/<appId>/crew/ask. They approve from their bell. The code page offers an invite prompt after the game moves to 6.0.

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, a video (.mp4) — 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.