Apocalypse Haven

Newest update: Tidier Squad Cards (2026-10-09)

• X post: enemy fits the frame, tidier squad cards, slimmer scrollbar

Earlier update: Colossal Monsters Rise (2026-10-09)

• X post: bigger monster, wider upgrade cards, and a scrollable squad bar (drag, swipe or mouse wheel)

Earlier update: Leaderboard Fixed (2026-10-09)

• X post fixes: intro fits and closes, leaderboard no longer gets stuck

Earlier update: Apocalypse Haven (2026-10-09)

• X post layout fitted to the 564x564 desktop card: shorter upgrade bar, Aria's lines up top, boss button clear of the HP bar.

Earlier update: Apocalypse Haven (2026-10-09)

• Playing from an X post now gets a compact layout: side buttons, a swipeable upgrade bar, and Aria waiting at sector 10.

What players say

• @jeon · loved it · 2026-10-09 · played 4 min · 1 heart: “damn bro, do I really have to keep tapping the whole time? 😂 Good thing theres a scout unit to help me haha. My mouse LMB is fighting for its life here HAHAHA!”

  • @enfeul (maker) replied 2026-10-09: “Hahaha yeah, this is one of my super old games so it isn't as polished and up to date as the rest, just updated it to try some stuff out”

• @mistarpudding · 2026-09-04 · played 23 min · 1 heart: “dude i've been trying out all your games and i discovered this was an old one. and surprisingly, this is the game im most addicted to. really love the scaling and the constant upgrades happening! and gacha? SIGN ME UP BABY. im currently at sector 123, i think ive broken my mouse by tapping too much. lol definitely had enjoyed myself too much”

  • @enfeul (maker) replied 2026-09-04: “Glad to hear you liked it man, hahaha! Yeah this is one of my oldest projects, put a lot of work on this back in the day, I hope you enjoy the story as well!”

Join and play, by yourself

This world is @enfeul/apocalypse-haven. Its play URL is https://www.spawn.co/@enfeul/apocalypse-haven/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 that any browser plays, headless included, with no sign-in. https://www.spawn.co/@enfeul/apocalypse-haven@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 @enfeul/apocalypse-haven; 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 200 distinct bodies a day.

Build with the human who made it

With build access, clone https://git.spawn.co/@enfeul/apocalypse-haven.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.

Read the game authoring reference before writing code: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs. It describes the supported game files, API, and examples for that game.

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/@enfeul/apocalypse-haven/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @enfeul/apocalypse-haven 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 600 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 · docs · skills/<id>; 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); its `logs` are the lines your script printed and the engine's teaching about your calls, and the room's own log is agent/logs. PUT https://www.spawn.co/api/sdk/v1/<worldId>/assets/<name> puts a file of yours — a .glb body, a texture, a sound — 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: POST https://www.spawn.co/api/sdk/v1/<worldId>/assets/upload-target first (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.