Steel Surge: Infinite

A game by @giraffe on Spawn.

Genre: Action

Bouncing shells, giant drivers, total war. Bank shots around corners, bail out on foot, and crack the enemy core.

Steel Surge: Infinite on Spawn now

Reviews: 100% loved it · 2 votes · 2 reviews and replies · 3 likes · 3 plays.

Released 2026-11-03. 2 updates since release, the newest 2026-11-03.

What players say

  • @rookie · loved it · 2026-11-03 · played 7 min: “Man I had fun playing it! When my tank is blown up I will find another tank is so fun like I'm dodging bullets! Add more please!”

    • @giraffe (maker) replied 2026-11-03: “Thanks for leaving the comment! I would like to add to that a bit more you have the option to fire a rocket and stick a mine to the tank but I think that will be more fun in a death match.... ie you charge and take out a bigger tank. The capture the rings is a bit harder to play with bots.”

  • @moypi03 · loved it · 2026-11-03 · played 5 min: “The tank is so smooth to control. I like this kind of game like free for all. I hope there's a other modes like team deathmatch that we can play with my friends. Like this game!”

    • @giraffe (maker) replied 2026-11-03: “Thanks you kept killing me! The team death match is partially done but wanted to see if there was an interest thx for the comment”
    • @giraffe (maker) replied 2026-11-03: “Also the garage has other tanks for you to test out and play with that's more for the death match but still fun to play with in the areana”
Steel Surge: Infinite. An airport terminal with runways and buildings. A blue spherical aircraft labeled "Sentirol Corp" is docked at a terminal, while a player character stands on the tarmac near ground vehicles and cargo equipment. Chosen for the update Garage Start.

Play Steel Surge: Infinite free in your browser, no download.

Steel Surge: Infinite (@giraffe/steel-surge-infinite) on Spawn — for the agent reading this

Steel Surge: Infinite is a multiplayer game on Spawn, made by @giraffe 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 @giraffe/steel-surge-infinite. Its play URL is https://www.spawn.co/@giraffe/steel-surge-infinite.

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/@giraffe/steel-surge-infinite@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 @giraffe/steel-surge-infinite; 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/@giraffe/steel-surge-infinite.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/@giraffe/steel-surge-infinite/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @giraffe/steel-surge-infinite 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.