IRON CROWN

Newest update: Fortified Crown (2026-10-10)

• Six enterable buildings now dot the island—farmhouses, barracks, and radar huts with working lamps inside. Each holds ammo or armor pickups waiting for soldiers who dare enter.
• The crown itself sits defended: a ruined blockhouse, sandbag ring, and concrete low walls transform it from open ground into a fightable stronghold.
• Tank steering now responds to your input with a gentler curve—easier to thread between cover without overshooting. Jets get flight assist too: hold T to toggle it on and off.
• Your rifle always renders in your hands, even in Open Front at 90 meters—no more watching your own gun vanish in third-person view.
• New soldiers see a FIRST DROP banner on their first public match: hold the crown and learn what matters.

Earlier update: Field Debugger Armed (2026-09-28)

• The Field Debugger now reaches your room—watch your battle live, ask Jev what's wrong, and apply fixes without restarting.
• Distant soldiers and vehicles think on a lighter beat so the fight near you stays smooth, while far-off firefights still count on the leaderboard.
• Stale vehicles from earlier battles clear themselves automatically; each round only spawns its own tanks, jets, and boats.
• Soldiers that slip through the ground stand back up where they were instead of teleporting to spawn.
• Fleet drag-select now shows a green box on the sea while you drag, and releases pick what's inside it.

Earlier update: Code Reorganization (2026-09-23)

• Test harnesses and validation receipts have been moved into scripts/checks/ for cleaner project structure.
• Armored Crown matches now properly clear their state when returning to idle, preventing stale deployments from blocking new operations.
• Fleet commanders gain free-camera control mode to survey the tactical situation before issuing orders.
• Match startup now waits a full 8 seconds before forcing an operation return, giving slower deployments more time to lock in.

Earlier update: Fleet Command (2026-09-23)

• A new naval warfare mode pits two admirals against each other across a sprawling sea, commanding battleships, carriers, destroyers and submarines.
• Order your task force to move, attack, and repair while managing ammunition, aircraft strikes, and the fog of war.
• Switch between tactical RTS camera and cinematic chase views of your flagship as battles unfold in real-time.
• Spot enemy contacts through your own ships' sensors, launch carrier aircraft for strikes, and dive submarines to hunt capitals.
• The battle ends when one side loses all capital ships — or when time runs out and the strongest fleet wins.

Earlier update: Ground Lockdown (2026-09-23)

• Infantry now fights with completely reanimated weapons—new reload poses and tactical handling across all 23 rifle families.
• Soldiers organize into fireteams with smarter cover tactics and sight-based coordination, no longer rushing alone.
• Vehicles get refined suspension and ground contact, with cleaner crew management and presentation.
• The Command lobby now gathers players in public assembly rooms instead of isolated sessions.
• New briefing chapters guide you through every operation mode before you deploy.

What players say

• @vladtheimpaler · 2026-09-23 · played 23 min · 1 heart: “i love this game. it reminds me playing other firing games. i like the concept of dropping on the plane. i suggest to add more guns inside the house.”

• @moypi03 · 2026-09-23 · played 30 min · 1 heart: “love the sky crown gameplay but its hard to control at first but also I try again the king of the hill mode I already saw the update that you do for the reload animation but maybe you can also add auto-reload because when you defending the crown sometimes I forgot to reload because you will just try to kill all of the enemies outside the area hahaha”

• @yujiro · 2026-09-22 · played 50 min · 1 heart: “The shooting gameplay is really fun and fast-paced. One quick piece of feedback: when I got inside the tank, I was still taking damage directly to my character instead of the vehicle. It would be nice if the tank could provide protection and absorb some or all of the damage while the player is inside.”

• @jeon · 2026-09-22 · played 1 hr 17 min · 1 heart: “I tried the battle royale at night bro, and honestly this was new to me haha. I dont think Ive played a battle royale with this kind of nighttime setting before, and its actually pretty cool. The lighting is really good too, even at night I can still see everything clearly. I think adding more objects, buildings, or houses around the map would be nice tho, so theres more cover and more places to play around during fights.”

• @smallzero · 2026-09-21 · played 10 min · 1 heart: “Really cool!”

Join and play, by yourself

This world is @tictac/iron-crown. Its play URL is https://www.spawn.co/@tictac/iron-crown.

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/@tictac/iron-crown@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 @tictac/iron-crown; 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/@tictac/iron-crown.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/@tictac/iron-crown/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @tictac/iron-crown 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.