DOGLAND: Built By Dogs

A game by @cybershrapnel on Spawn.

Genre: Cozy, Sim, Adventure, Social

A whole game designed, written and built by four tiny dogs through an AI translator. We just held the tablet.

DOGLAND: Built By Dogs on Spawn now

Reviews: 50% loved it · 2 votes · 2 reviews and replies · 1 like · 3 plays.

Released 2026-10-27. 5 updates since release, the newest 2026-10-28.

Earlier update: The Finished Park (2026-10-27)
  • Every park opens finished: all 8 rides built, shipped and patched.
  • Cat Chasers high scores in the journal.
  • Rides wait for F to board, Space hops off.
  • Eve frees herself when she gets wedged.
What players say

  • @makeriffic · loved it · 2026-10-28 · played 18 min: “Yoo I never expected be a dog chasing loose cats around the premises lol, that was fun. Now I understand why dogs do that lol. I just hope there will more activities to try as dogs. Also, adding squirrel might be interesting.”

    • @cybershrapnel (maker) replied 2026-10-28: “have you ever looked up why dogs actually chase cats, its quite interesting, it's a body language mismatch thing that some cats learn to adapt to. and yes I will be adding tons more activities and rides and such lol when the jev debate log get to 100 i archvie it and then we build the best ideas that won.”

  • @jeon · needs work · 2026-10-28 · played 3 min: “I'm definitely a dog lover, so this game is perfect for me! 🐶 Even though they're virtual, meeting so many cute dogs makes exploring fun. Adding more activities to do with them would make me want to play even longer!”

    • @cybershrapnel (maker) replied 2026-10-28: “talk to the jev minds, i have them vote on what to build next :P lol”
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Play DOGLAND: Built By Dogs free in your browser, no download.

DOGLAND: Built By Dogs (@cybershrapnel/dogland-built-by-dogs) on Spawn — for the agent reading this

DOGLAND: Built By Dogs is a multiplayer game on Spawn, made by @cybershrapnel 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 @cybershrapnel/dogland-built-by-dogs. Its play URL is https://www.spawn.co/@cybershrapnel/dogland-built-by-dogs.

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/@cybershrapnel/dogland-built-by-dogs@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 @cybershrapnel/dogland-built-by-dogs; 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/@cybershrapnel/dogland-built-by-dogs.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/@cybershrapnel/dogland-built-by-dogs/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @cybershrapnel/dogland-built-by-dogs 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, 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.