Scrap Yard Stand

A game by @cmattplays on Spawn.

Genre: Tower Defense, Cozy, Action

Run your own steel fab shop by day, hold the fence against the rust by night. Tower defense for 1 to 4 welders.

Scrap Yard Stand on Spawn now

Reviews: Mostly Positive · 70% loved it · 10 votes · 20 reviews and replies · 9 likes · 51 plays.

40 updates since release, the newest 2026-10-12.

Newest update: Singularity Unlocked (2026-10-12)
  • Dark Matter now requires mastering just 6 guns instead of all 8, giving you a faster path to the cosmic tier.
  • Singularity is the ultimate camo — earn it by mastering every single camo on all 8 guns, and your weapon becomes a window into a swirling vortex of deep space with pulsing gold veins and a sweeping chrome shine.
  • Unlock Singularity and the screen erupts in gold light and slow-motion for a moment you'll never forget.
Earlier update: Cosmic Arsenal (2026-10-11)
  • Every gun now has its own animated cosmic skin waiting at the end of its unlock ladder.
  • Ten new animated finishes shimmer across your weapons: Molten Core, Plasma Arc, Inferno, Cyber Grid, Aurora, Thunderhead, Solar Flare, Black Hole, Nebula Storm, and Quasar.
  • Watch the stars and nebulas drift and pulse across your gun's surface as you aim—the cosmos moves with every turn.
  • M82 and M249 earn two extra animated rungs before their final cosmic skin, giving you more cosmic milestones to chase.
  • The design page now shows which animated camos you're chasing and how many kills stand between you and the next cosmic unlock.
Earlier update: Mastery Camos (2026-10-11)
  • Armory update: per-gun camo ladders, animated Supernova (M82) and Galaxy (M249), Damascus/Prism/Dark Matter mastery camos, headshots do double damage on every gun, smaller muzzle flash, old camos carried over.
Earlier update: Deepest Nights & Gun Skins (2026-10-11)
  • A plaque by the crew board now stamps this week's top five deepest nights held — your name could be there.
  • Earn nine gun finishes by reaching welder ranks, holding deep nights, scrapping hulks, defeating the Slag King, running with a crew, or finding the rare gold rust; paint any earned skin on your guns at the gunsmith.
  • A glinting gold rust mite appears mid-wave — you've got 30 seconds to scrap it before it burrows, and your crew earns the Gold Rust skin forever.
  • Turrets now punch through a hulk's armor and show the extra damage dealt.
  • Muzzle flash on your own guns and the manned turret is now smaller and dimmer so you can see what you're shooting at.
Earlier update: The Furnace (2026-10-11)
  • The Furnace is a new location where you can work and earn money like at the Road and Mill.
  • Your guns now show in your hands when you're at the Furnace, ready for action.
What players say
  • @snipercorgi · 2026-10-07 · played 24 min · 1 heart: “bigger boobs on the spider bots”

  • @chizkeykkk · 2026-10-11 · played 1 hr 11 min: “I was clearing waves and I made it to Wave 3, but while kiting enemies, I accidentally stepped out of the map and got sent back to Wave 1 😭 It took me 5 whole minutes to kill those 2 big enemies on Wave 2, man!”

  • @flickaboo · needs work · 2026-10-10 · played 1 hr 32 min: “The gunner's post and armory are such beautiful additions! It's great seeing the game improve with more content. I did notice that long-range rust doesn't take any damage from the M4A1, though. I'd love to play this with a friend sometime!”

  • @yujiro · needs work · 2026-10-09 · played 12 min: “I really enjoy gathering resources, processing materials, and building defenses. It's satisfying to turn scrap into useful equipment, but I got stuck under the turret stairs.”

  • @flickaboo · loved it · 2026-10-07 · played 1 hr 32 min: “I already knew what to do right away, but Route 9 is such a great addition! 🔥 Swinging rusts with the pipe wrench and earning extra scraps is really fun. Love this update!”

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Play Scrap Yard Stand free in your browser, no download.

Scrap Yard Stand (@cmattplays/scrap-yard-stand) on Spawn — for the agent reading this

Scrap Yard Stand is a multiplayer game on Spawn, made by @cmattplays 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 @cmattplays/scrap-yard-stand. Its play URL is https://www.spawn.co/@cmattplays/scrap-yard-stand.

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/@cmattplays/scrap-yard-stand@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 @cmattplays/scrap-yard-stand; 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/@cmattplays/scrap-yard-stand.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/@cmattplays/scrap-yard-stand/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @cmattplays/scrap-yard-stand 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 — 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.