Sugar Stack

Newest update: Sugar Stack Update (2026-09-16)

• Friend duels now include a direct invite link and a Join friend option. Arrivals open the shared table, both players tap Ready, and late requests no longer disappear. Creator practice remains unsaved and unranked.

Earlier update: The Creator's Kitchen (2026-09-13)

• A special practice mode is now available for creators to test and refine their strategies without affecting their rating.

Earlier update: Sugar Stack Update (2026-09-13)

• Restored the full menus for fresh starts, including leaderboard browsing and friend duels. Improved the opening tutorial. Temporary creator practice visits stay unsaved, with unranked practice duels; normal player saves and ratings are unchanged.

What players say

• @yujiro · 2026-09-23 · played 10 min · 1 heart: “I like the puzzle aspect of clearing the cards by finding pairs that add up to 13. It’s easy to understand once you learn the rules, but choosing which cards to clear first adds some strategy since each move can reveal more cards. The candy-themed card designs also give the game a nice relaxing feel.”

  • @erika (maker) replied 2026-09-23: “I’m glad you enjoyed the game :) I may try to push a update soon”

• @alongzera · 2026-09-16 · played 32 min · 1 heart: “fun card game. love how there is a tutorial mode where it explains the game mechanics.however the multiplayer mode is not functioning yet would lvoe to try that with a friend as well”

  • @erika (maker) replied 2026-09-16: “Thank you for pointing this out. I pushed an update to fix it. Let me know how it is :)”

• @lego · 2026-09-12 · played 9 min · 1 heart: “im confused, what am i supposed to be doing again? i clicked the tutorial too fast and can't see it anymore. your How to Play doesn't really help me at all. pls help me, maybe i'm just dumb lol”

  • @erika (maker) replied 2026-09-12: “The goal was to make 13 there was a hand for that but it somehow dissapeared I’ll go add it back thanks for checking this over. Spawn sometimes gets rid of things on me.”

• @makeriffic · 2026-09-12 · played 25 min: “Hey, I like this game. There was no tutorial on the start, thankfully there was a how to play section, and I quickly understood it. The game is addictive like solitaire, and I kinda wanna grind and defeat them all. I am just curious can you be defeated in the game? or its just for scoring?”

  • @erika (maker) replied 2026-09-12: “Right now it’s just for scoring but should I add that option? I can add a tutorial if needed :)”
  • @makeriffic replied 2026-09-13: “I think the game would be interesting if there was only limited number of moves, but I also think it should stay endless at the own player's pace for it to be beginner friendly lol. I''ll leave it up to you! Also, I think the how to play section in the menu is enough, because right now, the only way to acess it is if you play a round first.”

Join and play, by yourself

This world is @erika/sugar-stack. Its play URL is https://www.spawn.co/@erika/sugar-stack.

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/@erika/sugar-stack@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 @erika/sugar-stack; 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/@erika/sugar-stack.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/@erika/sugar-stack/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @erika/sugar-stack 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.