Emberkeep

Newest update: Emberkeep Update (2026-09-13)

• Three independent save slots with your existing adventure safely in slot one, a SAVE button beside NEW RUN, a guided first-floor tutorial, clearer battle animations, and a tougher economy: recruit prices increased 50% and dungeon gold rewards halved. Existing gold, owned heroes and progression are preserved.

What players say

• @jeon · 2026-09-13 · played 5 min · 1 heart: “I like the concept bro, and the animation and graphics make me feel like im playing on a Nintendo Switch haha. I cant defeat the dark tho, and when I reach it my HP is always really low. I think I just need to spend more time playing and master the gameplay haha.”

  • @legendmaster (maker) replied 2026-09-14: “thank you but I would need to know what level you were on to help.”

• @mistarpudding · 2026-09-13 · played 23 min · 1 heart: “dude i dig the game's concept! i had fun recruiting heroes and strategizing my dungeon crawls. i hired colossus (for tanking) and pyromancer (for dmg), and im pretty much in a good spot right now. i think the game just needs some polishing, like some sound effects and other animations would be great! theres also a bug where the model lingers whenever a hero dies. check out the screenshot”

  • @legendmaster (maker) replied 2026-09-13: “thank you for the input I will patch that bug as much as possible and would to let you design your own character because of your help”

• @lego · 2026-09-19 · played 13 min: “I like the gameplay! I had a little trouble reading things at first, but I think I understand how the game works now. Tho I think I encountered a bug? I can keep descending, and I'm already at Floor 169 lol”

  • @lego replied 2026-09-19: “This happens when I defeated the 1st boss”

• @yujiro · 2026-09-18 · played 13 min: “I really enjoyed playing. Moving around the dungeon and exploring the different areas was fun, and the visuals made it easy to tell what I could interact with or pick up. I liked discovering my way through the map and figuring out what to do next. The simple 2D style worked really well with the gameplay.”

• @makeriffic · 2026-09-16 · played 18 min: “I have tried returning to menu and descending on the current floor it comes back to that screen and keeps climbing up. I have figured it out though, I have my run reset to level 1 and from thereon out the descend button works properly.”

Join and play, by yourself

This world is @legendmaster/emberkeep. Its play URL is https://www.spawn.co/@legendmaster/emberkeep.

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/@legendmaster/emberkeep@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 @legendmaster/emberkeep; 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/@legendmaster/emberkeep.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/@legendmaster/emberkeep/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @legendmaster/emberkeep 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.