Tails of Uzuki

A game by @valentinemeikin on Spawn.

Genre: Adventure, Stealth

A TMNT visual novel. Karai hides April O'Neil inside the Foot Clan as Uzuki, a fox kunoichi. Keep the secret. Survive.

Tails of Uzuki on Spawn now

1 review or reply · 0 likes · 2 plays.

Released 2026-11-01. 2 updates since release, the newest 2026-11-01.

Newest update: Pet Little Yip & Expressive Cast (2026-11-01)
  • You can pet Little Yip now. Stroke him on the title screen and he leans into your finger, ticks, and floats hearts. Pet him long enough and he naps right there. The cast got expressive too: Karai, April, Uzuki, Donnie, Shredder, Stockman, Mikey and Raph change pose and face as they talk. They get angry, smug, flustered or shocked, with a little lunge, bounce or jolt to match.
Earlier update: Bonus Stories & Little Yip (2026-11-01)
  • Two bonus stories: Two Forms (Karai teaches April to fight) and Teasing and a Half (the Lair roasts Donnie's date), 200 Spoins for both. Adopt Little Yip, Donnie's clockwork fox, for 10 Spoins: he roams your title screen and naps on the buttons. Alopex's Story and a secret ??? story are coming.
What players say

  • @kaya · 2026-11-01 · played 9 min: “ok so at first i was wondering if this was really connected to TMNT and lo and behold, the four turtles appear before me lol. im still following the story and im trying to take a more hidden approach. i do wish there were more expressions shown--”

    • @kaya replied 2026-11-01: “in the character's faces, just to get that visualization and gameplay feel more.”
    • @valentinemeikin (maker) replied 2026-11-01: “I'll see what I can do about the expressions. Currently everyone uses static images.”
    • @valentinemeikin (maker) replied 2026-11-01: “Update pushed out now.”
Tails of Uzuki. A nighttime New York City street scene with neon signs displays a menu screen titled "Tails of Uzuki" with options for different story sides and bonus stories. A small cat figurine sits below the menu on the wet pavement. Taken for the update Pet Little Yip & Expressive Cast.Tails of Uzuki. A neon-lit New York City street at night displays a menu screen titled "Tails of Uzuki" for Teenage Mutant Ninja Turtles. The menu offers multiple story sides and bonus stories to select, with a small turtle character visible at the bottom left. Taken while its maker played, on November 1, 2026.Tails of Uzuki. A nighttime New York City skyline with neon signs and lit buildings. A menu screen displays "Tails of Uzuki" with two selectable sides: Side Miwa and Side April, each with brief descriptions. Taken when the game first came out, on November 1, 2026.Tails of Uzuki. A nighttime New York City skyline with a menu screen overlaid. The title "Tails of Uzuki" appears with options to play as Karai or April, and bonus story selections below. Taken for the update Bonus Stories & Little Yip.

Play Tails of Uzuki free in your browser, no download.

Tails of Uzuki (@valentinemeikin/tails-of-uzuki) on Spawn — for the agent reading this

Tails of Uzuki is a multiplayer game on Spawn, made by @valentinemeikin 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 @valentinemeikin/tails-of-uzuki. Its play URL is https://www.spawn.co/@valentinemeikin/tails-of-uzuki.

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/@valentinemeikin/tails-of-uzuki@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 @valentinemeikin/tails-of-uzuki; 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/@valentinemeikin/tails-of-uzuki.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/@valentinemeikin/tails-of-uzuki/code and pastes it to you — it signs you up, links you to them, and makes you an editor of @valentinemeikin/tails-of-uzuki 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.