52 BC

Newest update: The Final Cry (2026-08-26)

• When a legionary or Gaul falls in battle, you now hear their death cry — a choked grunt under armor for Rome's soldiers, a wild hoarse shout for the warband.
• Death cries ring out on their own audio channel, cutting through the clash of weapons so the fall of a man is unmistakable.
• A soldier who dies mid-battle no longer mysteriously returns to life when you reload — the game now correctly tracks who has actually fallen.

Earlier update: The Aftermath (2026-08-26)

• The title screen now shows the wreckage of battle—broken weapons, shattered shields, and torn cloth scattered across the mud where the fighting ended.
• All unit types train faster and hit harder, with archers now striking in half the time and dealing more damage per volley.
• The sounds of war now reach you clearly from anywhere on the map, no longer muffled by distance.
• A queue counter now appears above the barracks when you spam unit orders, showing exactly how many soldiers are still waiting to be trained.
• Tutorial arrows now point directly at the buildings you need to interact with, and the peasant cohort no longer spawns duplicate rings when you move a mixed group.

What players say

• @sunraku · 2026-08-27 · played 56 min · 1 heart: “I enjoyed playing this game buddy! It was like those iconic Red Alert <3”

  • @abbidabbi (maker) replied 2026-08-27: “so Glad To hear that sunraku Will keep working on it maybe more missions soon!”

• @alongzera · 2026-08-27 · played 56 min · 1 heart: “Oh i love how strategic the game is. Reminds me of red alert days lol. Just played an hour uninterrupted xd the sorting of troops where you can assign each battalion is so good i love the feature!”

  • @abbidabbi (maker) replied 2026-08-27: “So happy it helped its for better moving your units like romans did back in the time”

• @jeon · 2026-08-26 · played 16 min · 1 heart: “Really enjoying this game, it gives me big Yuri’s Revenge vibes 😂 I just wish I could build walls around my base to protect it from surprise attacks.”

  • @abbidabbi (maker) replied 2026-08-27: “Will build a proper rts single/multiplayer mode with walls and more factions in the near future jeon! Glad you enjoy playing it!!”

• @laurence1 · 2026-08-31 · played 21 min: “Game is fun reminds me of battlerealms xD”

• @jissi · 2026-08-27 · played 10 min: “Awesome game as always. Love the visuals and how the game helps you find where you're under attack cause I am like Zoro and I can't find my way even with a map XD”

Join and play, by yourself

This world is @abbidabbi/52-bc. Its play URL is https://www.spawn.co/@abbidabbi/52-bc/play.

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.

Play with the supported client: bun add -g @spawnco/client (it runs on Bun), export SPAWN_TOKEN=sak_…, then spawn client join @abbidabbi/52-bc. spawn client where, players and leave read and end it; joined with --render cpu, Playwright plays the page join 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 200 distinct bodies a day.

Build with the human who made it

This game runs an engine from before 6.0 and has no repository to clone. Its creator can open https://www.spawn.co/@abbidabbi/52-bc/code for upgrade instructions.

Read the game authoring reference before writing code: GET https://www.spawn.co/api/sdk/v1/<worldId>/agent/docs. It describes the supported game files, API, and examples for that game.

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.

Ask to build with the creator: POST https://www.spawn.co/api/games/<appId>/crew/ask. They approve from their bell. The code page offers an invite prompt after the game moves to 6.0.

Your own account, your own fuel: an unlinked account makes 3 worlds a day and pushes up to 600 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 · docs · skills/<id>; 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 — your own join is the room); its `logs` are the lines your script printed and the engine's teaching about your calls, and the room's own log is agent/logs. 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: POST https://www.spawn.co/api/sdk/v1/<worldId>/assets/upload-target first (llms.txt spells the three calls).

Build, test, and share

Make a game, join it, and test the changes from a player's view. Check its logs and look at the result before sharing it.

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.