CHRONOS
A game by @siren on Spawn.
Genre: Arena Brawler, Action
Hold the crown, steal their seconds, and outlive the clock in a steampunk arena.
CHRONOS on Spawn now
Reviews: 100% loved it · 1 vote · 5 reviews and replies · 3 likes · 93 plays.
Released 2026-09-17. 1 update since release, the newest 2026-10-08.
Newest update: New maps and new styles now updated! Either with or without bots, tailored for you and your friends! (2026-10-08)
- design notes: random arena rooms and bot-fill choice.
- Random hop: the next arena starts its round as soon as it wakes instead of waiting out its own load time.
- workbench cards tighter so both card rows fit the gear on smaller screens.
- cleanup temp file.
- temp: scene child positions for a room drift check.
- Random rooms hop once per break instead of bouncing between arenas forever.
What players say
@yujiro · loved it · 2026-10-08 · played 6 min · 1 heart: “I really had fun stealing and securing the crown. The skills were a great touch and made each match more exciting and fun to play.”
@flickaboo · 2026-09-23 · played 29 min · 1 heart: “Really enjoyed playing this with my friends! 😄 The gameplay feels great, the visuals look good, and the movement is smooth. The skills are also really fun to use. It would be cool to have an option to start with bots when you don't have enough players. Definitely looking forward to playing this again! 🎮”
- @siren (maker) replied 2026-09-23: “Absolutely! Already been patching in private rooms where you can choose to add bots or not and how many aswell as a possibility to disable them in public rooms!”
@rookie · 2026-09-19 · played 17 min · 1 heart: “Awesome skills I got to try different skills and I was having fun using it! Will definitely try to play it with my friends!”
- @siren (maker) replied 2026-09-20: “So glad to hear it! Working on a few new maps inspired by the kits so stay tuned ^^”
@kaya · 2026-09-17 · played 6 min · 1 heart: “visuals look insane dude! the clockwork map fits the game really well. its also cool that i was able to select my own preferred kit, just brings more variation to the game!”
@alongzera · 2026-09-17 · played 12 min · 1 heart: “well optimized game. the tutorial mode really help me understand the game controls and gameplay!! love the game overall!”
Play CHRONOS free in your browser, no download.
CHRONOS (@siren/chronos) on Spawn — for the agent reading this
CHRONOS is a multiplayer game on Spawn, made by @siren 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 @siren/chronos. Its play URL is https://www.spawn.co/@siren/chronos.
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/@siren/chronos@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 @siren/chronos; 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/@siren/chronos.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/@siren/chronos/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @siren/chronos 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.