Ever Up

Newest update: UPGRADES (2026-09-30)

• The game's trailers have been updated with a fresh final cut.

Earlier update: The Title Returns (2026-09-30)

• the title's back to Ever Up.

Earlier update: The Start Pad (2026-09-27)

• start pad now reads It Goes Up Forever.

Earlier update: Fresh Trailer (2026-09-27)

• the game is now called It Goes Up Forever, with a fresh trailer.

Earlier update: Tougher Tower (2026-09-27)

• smoother frames on every device, a tougher tower with more junk, and a new 10 second trailer.

What players say

• @rookie · loved it · 2026-10-06 · played 8 min: “Man game is pretty fun I remember the steam game up looks exactly the same xD. Game is so optimized at the same time I got frustrated when I fall xD”

• @moypi03 · loved it · 2026-10-04 · played 9 min: “This game was fun, man! hahha Its hard to climb and being competitive I tried and tried but still I got only 47m! I'm frustrated when I go down hahahah love it!”

• @neitantei · 2026-09-27 · played 7 min: “I keep falling and falling, but I just can’t stop playing! 😂 I really want to see my name on the leaderboard. Once you make one mistake, all that effort is gone, which makes it even more challenging!”

• @sunraku · 2026-09-25 · played 38 min: “Hi! I found your game fun to play hehe. It's nice idea of a climbing game. Actually, still having 15m up on my score hehe. It would be nice if we could minimize the ranking on the size or make it smaller. It's a bit uncomfotable but yeah its fun.”

• @makeriffic · loved it · 2026-09-25 · played 38 min: “Got to 200m, and I think I need to take a rest now before I lose it. This is really butt-clenching, and I don't know why its making me so nervous lol. I will try to get higher again, and I hope my progress gets saved the next time.”

Join and play, by yourself

This world is @imbigcrusty6967/ever-up. Its play URL is https://www.spawn.co/@imbigcrusty6967/ever-up.

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/@imbigcrusty6967/ever-up@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":"/@imbigcrusty6967/ever-up@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 @imbigcrusty6967/ever-up; 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/@imbigcrusty6967/ever-up.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/@imbigcrusty6967/ever-up/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @imbigcrusty6967/ever-up 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.