Elementia

Newest update: The Polish Pass (2026-08-09)

• Battle sounds no longer bleed into the lobby when other players are fighting.
• Phone players now have bigger, easier-to-tap buttons and better spacing on landscape screens.
• UI dialogs and modals are more readable and responsive across all screen sizes.

Earlier update: The Leaderboard Fix (2026-08-09)

• Your win-loss record now appears instantly when you join a match, instead of taking up to a minute to load.
• Benched and retired creatures can no longer sneak into your teams through save bugs or sync errors.
• The team builder now shows slots in the same left-to-right order you'll see them in battle.

Earlier update: The Adventure Awaits (2026-08-09)

• A whole new Adventure Mode opens up—explore two sprawling worlds across five challenging nodes each, battling fresh enemy types and two epic boss encounters.
• Your pufflings now face completely different foes in each world, with Bramble Meadow's creatures giving way to Ember Peak's volcanic challengers.
• Two mighty bosses—the Bramble King and Ember Tyrant—each wield their own powerful four-card decks you've never seen before.
• The battle arena itself transforms between worlds: Bramble Meadow's lush green gives way to Ember Peak's molten orange and black volcanic landscape.
• New skill cards debut for every elemental class—two extra powers per lane mean fresh strategy options in every fight.

Earlier update: Battle Arena Live (2026-07-28)

• Your pufflings now float and drift on the battle stage, bringing them to life with idle hovering and gentle sway.
• A brand new PRISM class joins the arena — Iris, the opalescent floating orb, with four shimmering refraction abilities.
• Battle effects now have their own cleanup system, preventing lingering visual artifacts between rounds.
• PvP matchmaking is here — queue up to face other players in real-time ranked battles with a live leaderboard.
• Six elemental types now field as hovering orbs instead of static stickers, each with unique idle auras that glow when attacking or taking damage.

Earlier update: Sealed Arenas (2026-07-23)

• Every player's arena is now fully their own — nothing that happens in one player's battle can ever touch another's.

What players say

• @danly · 2026-08-11 · played 6 min · 2 hearts: “decent!”

• @rookie · 2026-08-10 · played 42 min · 2 hearts: “This game absolutely good it's pretty fun and addicting and also with gatcha rolls that's sick! Nice work chucky!”

  • @chucky (maker) replied 2026-08-10: “thank u so much!”

• @j · 2026-07-28 · played 10 min · 2 hearts: “this is so good! i feel like i need a "First battle/meet your puffs" experience to teach me how to play”

  • @chucky (maker) replied 2026-07-28: “yeah, its a great idea! I had left it open to free discovery hehe”

• @enfeul · 2026-07-23 · played 4 min · 2 hearts: “Pretty fun game as always Chuki! Nice work!”

  • @chucky (maker) replied 2026-07-23: “Thank u so much Enfeul!”

• @jissi · 2026-07-23 · played 10 min · 2 hearts: “Fun game, very polished with gacha is crazy”

Join and play, by yourself

This world is @chucky/elementia. Its play URL is https://www.spawn.co/@chucky/elementia/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, and a person's browser plays it with no sign-in. https://www.spawn.co/@chucky/elementia@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.

A browser a script drives, headless or not, plays signed in as your account: POST https://www.spawn.co/api/agent/v1/login-link with {"next":"/@chucky/elementia@dev"} answers a one-use URL that signs that browser in.

Unsigned, such a browser is a guest, and a creator's world refuses it: "this browser was opened by an automated tool, so it can't visit a creator's world as a guest. sign in, or open the link in a browser you use yourself." Its maker can ask Spawn to let their own automated tool in by name.

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 @chucky/elementia; 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/@chucky/elementia/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.