Steep Climb

A game by @ai_lover on Spawn.

Genre: Racer

Four cars, four roads and living suspension. Keep your balance, grab the fuel and set your time.

Steep Climb on Spawn now

Reviews: 100% loved it · 2 votes · 6 reviews and replies · 4 likes · 14 plays.

Released 2026-09-28. 4 updates since release, the newest 2026-10-09.

Newest update: Alpine Pass (2026-10-09)
  • A brand new mountain course awaits climbers ready to test their skills on steep alpine terrain.
  • Unlock fresh vehicles tuned for high-altitude racing and challenge the peaks with new performance capabilities.
  • Compete against ghost data from other racers on the Alpine course and claim your place on the global leaderboard.
Earlier update: Ghost Car Clarity (2026-10-09)
  • Other drivers' ghost cars are now see-through so you can spot them instantly on the hill.
  • Name plates above ghosts are bigger and positioned higher — easy to read at a glance while racing.
Earlier update: Nitro & Tricks (2026-10-09)
  • Hold Nitro to boost your car's acceleration and top speed while burning fuel.
  • Land flips and backflips mid-air to earn coins and refill your Nitro tank.
  • See other drivers as ghost cars racing alongside you with their names displayed.
  • Race together with a shared 3-2-1 countdown and watch the winner announced at the finish line.
Earlier update: Alpine Route (2026-09-29)
  • A new high-altitude course awaits climbers ready to tackle steeper terrain and thinner air.
  • Navigate treacherous mountain passes with fresh vehicle tuning challenges designed for the peak conditions.
What players say

  • @larrielabs · loved it · 2026-10-09 · played 7 min: “This reminds me of a mobile game I used to play before, so I really enjoyed it! 🥹🚙The fact that you can change your car is such a nice touch, and I’m excited to unlock more cars and maps! 🌿✨”

  • @moypi03 · loved it · 2026-10-01 · played 25 min: “Love your game man! The climb , the car , the movements feels smooth I didn't encounter any lag hahah maybe add some flip that will add additional coins for upgrade”

  • @alongzera · 2026-09-29 · played 6 min: “suggestion to have a sprint or turbo feature to make the game more exciting. Would love to have a multiplayer mode as well to make the game competitive.”

  • @flickaboo · 2026-09-28 · played 12 min: “The climb feels smooth with no noticeable lag or issues. 🧗‍♂️ Since it’s a single-player experience, I think a leaderboard would be a great addition. It would be fun to compare climb times and compete for the top spot! 🏆🎮”

  • @vladtheimpaler · 2026-09-28 · played 9 min: “Brother the game is nostalgic! Love the first car! itreminds me of the color of my first car. thank you for bringing memories of it. I love the game, would be better if we can control the car more midair”

Steep Climb. Garage menu showing four available cars: Jeep, Buggy, Pickup, and Monster Truck. The Monster Truck is locked and requires unlocking on Snow Pass. Taken for the update Alpine Pass.Steep Climb. Green Valley landscape with rolling hills, trees, and a distant farmhouse. A damaged yellow buggy sits on a road, with a game interface showing "Headhut" status and repair options. Taken when the game first came out, on September 28, 2026.Steep Climb. A garage menu screen displays four vehicle options: Jeep, Buggy, Pickup, and Monster Truck. The Monster Truck is selected and shown as locked, with a snowy mountain map visible below it. Taken while its maker played, on October 9, 2026.

Play Steep Climb free in your browser, no download.

Steep Climb (@ai_lover/steep-climb) on Spawn — for the agent reading this

Steep Climb is a multiplayer game on Spawn, made by @ai_lover in conversation with Savi. Open its play link to join. You can also ask the creator to build with them.

Join and play, by yourself

This world is @ai_lover/steep-climb. Its play URL is https://www.spawn.co/@ai_lover/steep-climb.

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