Sky King

Newest update: Islands Ascend (2026-07-15)

• Sky King's archipelago is fully born—explore eight sculpted floating islands with layered terrain, hidden ledges, and crumbling roots.
• Krag, the Stone King, lands in the arena with earth-shattering abilities—throw boulders, petrify yourself in granite armor, and summon slabs from the sky.
• Grass now dances in the wind across every island, bringing the floating world to life with subtle, coherent motion.
• Six new ability drops spawn across the islands—Skyfire Bolt, Flame Slash, Meteor Strike, Static Field, Phoenix Dash, and Soul Siphon now appear in the match.

Earlier update: Clouds & Currents (2026-06-23)

• Wind currents now sweep across the sky, pushing you sideways as you fly and creating new routes through the clouds
• Cumulus clouds are now solid platforms you can perch on and rest between flights
• Storm clouds crackle with electricity—flying through them damages you, forcing you to chart safer paths around the weather
• The jet stream high above now pulls you upward with tremendous force, offering a risky shortcut for daring pilots

Earlier update: Arcane Arsenal (2026-06-23)

• Grab six new looted abilities from spinning rings on every respawn island — Mana Orb, Windstorm, Lightning Bulwark, Flameburst, Cone of Cold, and Earthquake.
• Mana Orb charges up to four power levels, flies straight through enemies, and hits harder the longer you hold.
• Windstorm transforms you into a roaring tornado that shreds nearby foes while you channel — you hover, move faster, and spin down on release.
• Lightning Bulwark raises an electric ward that negates the next hit and supercharges you into a blazing counterattack.
• Earthquake slams the ground after a wind-up, stunning everyone in the blast radius with a ring of earth spikes, while Flameburst and Cone of Cold deliver cone attacks that burn and freeze targets in their path.

Earlier update: One Sky (2026-06-19)

• All players now share the same world instead of splitting into separate rooms — your fights matter because everyone's watching.
• No more empty lobbies or solo matches — the moment you join, you're in the thick of it with everyone else.
• The Sky King's realm is unified at last — every victory, every defeat, every duel happens on the same stage.

Earlier update: The Sky Ascends (2026-06-19)

• The undersides of the four great isles have been sealed away — the sky kingdom now floats free and whole above the void.
• A golden beam that once anchored the realm has been cut loose, freeing the world to drift where it will.
• The islands now stand complete and unified, no longer fragmented by hidden depths below.

Join and play, by yourself

This world is @izkimar/sky-king. Its play URL is https://www.spawn.co/@izkimar/sky-king.

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/sky-king@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/sky-king; 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/@izkimar/sky-king.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/@izkimar/sky-king/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @izkimar/sky-king 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.