CELADON — The Long Ash
Free · play online in your browser, no download
Throw a pot on the wheel, trim it, glaze it and fire it, then open the kiln to see what happened, in a 3D pottery game with no art assets. The developer says everything was made with Claude Opus 5.
Official site winchxyz.github.io, verified Nov 3, 2026. Play link in the repository README, which the developer links in their own Reddit posts.
Where to play
Every platform this game is on. Links are checked against official sources; we never host or mirror games.
- Play free — official siteBrowserReleasedFree
Runs in a desktop or mobile browser. No download.
Browser (no download) · Mobile · Official link verified Nov 3, 2026.
- View on GitHubGitHubReleased · Source code (three.js, Vite), MIT licenceFree
Source code repository, not a place to play.
Official link verified Nov 3, 2026.
About CELADON — The Long Ash
CELADON — The Long Ash is a free 3D pottery game for the browser. Nine winters ago a mountain opened and has been pouring out ash ever since; the only reliable heat left is in the kilns of the Ember Guild, and you start with your grandmother's wheel, her kiln and her mark. Each piece goes through the wheel, drying, trimming, glazing and the kiln. On the wheel there is one control: you drag on the clay, and dragging up, down, outward or inward lifts, presses, bellies or collars the wall, while a panel shows the shape the client asked for over the shape you are making. The clay is simulated, so a pot can slump when too wet, tear when too thin, walk off the wheel when it was never centred or grow past what wet clay can hold; an assist, on by default, keeps the wheel turning and the clay from drying too fast. Twelve glazes are defined by their chemistry, and a pot can carry three. In the kiln you either let the Guild set the firing for the glazes on your pot or set all six controls yourself, then watch about forty hours pass in forty seconds. Finished pieces are graded out of 100 on Form, Craft, Surface, Fire and Brief. There are 24 story commissions from named patrons followed by endless standing orders, clay bought by weight, four clay bodies, a shelf for every surviving piece and a codex; the open shed is a free mode with every glaze unlocked and no brief or fee. According to the README, every texture, material, the environment map and the music are generated by code when the game loads, and the only files it fetches are nine small CC0 sound recordings. It needs WebGL2 with hardware acceleration and also works on tablets. The developer, posting as u/oxmannnn, says everything was made with Claude Opus 5 in Ultra Code mode. The code is MIT-licensed on GitHub.
How it was built
Partially verifiedIn posts on r/vibecoding and r/ClaudeCode (26 Aug 2026, UTC) the developer writes: “Everything was made with Opus 5 in Ultra Code mode.” The README ends “Built with Claude Opus 5 in Ultracode mode.” The developer used a Claude Max (20x) subscription and estimated what the build would have cost at API prices: 2.34 billion raw tokens, 7.13 million of them written by Claude and 98.1% read back from cache, or $11,850.91 without caching. In the r/ClaudeCode post the developer describes the workflow: one “curator” chat keeps the overall context, hands tasks to worker chats and checks their results, and the developer verifies the controls by hand with screenshots and videos, which Claude then analyses frame by frame. The developer does not name the Claude product.
- DeveloperREADME badge and closing line: “Built with Claude Opus 5 in Ultracode mode.” — GitHub (winchxyz)
- Observed50 of the repository's 53 commits (24–28 Aug 2026) carry a “Co-Authored-By: Claude Opus 5” trailer. — GitHub (winchxyz)
Built over about two days, per the r/ClaudeCode post, as part of the developer's series of three.js demo games; asked how many hours it took, the developer replied “Around 12-14 hours in total.” The README describes the simulation: the pot is 168 stacked rings of fixed clay volume whose height follows from mass conservation, revolved into 45,000 vertices on the GPU from a small profile texture each frame; molten glaze flows downhill during firing, colour comes from light absorbed through the glass layer, and crazing depends on the mismatch between glaze and clay body. Every texture and material is generated by code at load, the music is synthesised, and nine CC0 sound recordings (about 140 kB) are the only fetched files. Twenty-one headless test benches cover the clay, the controls, the economy and the campaign. The developer says graphics started out realistic and were made more childlike and cozy, and that an attempt at hand tracking through the camera did not work and is not in the game.
- Engine / framework
- Three.js
- Languages
- JavaScript
- Team size
- Not disclosed
- Initial build time
- About two days (around 12–14 hours of work)Developer ReportedReddit (u/oxmannnn)
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- Not disclosed
“Everything was made with Opus 5 in Ultra Code mode.”- winchxyz/celadon (GitHub)
- I vibecoded a pottery game (r/vibecoding)
- Pottery game with Opus 5 (r/ClaudeCode)
Verification notes: AI use from the developer's posts by u/oxmannnn on r/vibecoding (26 Aug 2026, 22:14 UTC) and r/ClaudeCode (22:42 UTC), and the reply “Around 12-14 hours in total” (27 Aug 2026, 01:21 UTC), read from the Arctic Shift Reddit archive on 7 Nov 2026; both posts link the repository. The README and LICENSE (MIT) were read through raw.githubusercontent.com and the commit history from a clone of the public repository on 7 Nov 2026: 53 commits by “winch” (the GitHub account winchxyz) between 24 and 28 Aug 2026, 50 with a “Co-Authored-By: Claude Opus 5” trailer. The token and price figures are the developer's own estimate of what the build would have cost at API prices; the developer paid for a subscription, so no development cost is recorded. “Ultra Code” / “Ultracode” mode is the developer's wording; we did not establish which Claude product it refers to, so the tool is recorded as Claude. The game page's script fetches only its own sound files and a version file; it calls no AI services. The posts call the free mode “creative mode”; the game calls it the open shed. The Reddit and GitHub names are different handles; the developer's identity is not stated beyond them. No release date is given; the game went public on GitHub Pages on 24 Aug 2026 per the commit history. The game was not played.
Development history
First commit (“CELADON — a 3D pottery game with nothing in it but code”), MIT licence added and the game published on GitHub Pages.
ObservedGitHub (winchxyz)The developer presents the game on r/vibecoding (22:14 UTC) and r/ClaudeCode (22:42 UTC), made with Claude Opus 5.
Latest commit in the public repository as of 7 Nov 2026.
ObservedGitHub (winchxyz)
Game performance
Each figure measures something different — concurrent players, owners, downloads and sales are never interchangeable and are never added together. Labels show where each number comes from.
Browser (official site)
Free in the browser with no install; needs WebGL2 and hardware acceleration. The developer says it also plays on an iPad. Progress is saved in the browser.
No public metrics recorded for this listing.
Not publicly available: Concurrent players (site), Monthly revenue, Gross revenue.
GitHub
No public metrics recorded for this listing.
Not publicly available: GitHub stars.
Sales & revenue (all platforms)
Browser game — there are no downloads to count.
Reviews & rankings
Not yet reviewed by our editors.
Not currently ranked.
Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| I vibecoded a pottery game (r/vibecoding) Reddit (u/oxmannnn) | Social post | Aug 26, 2026 | Nov 3, 2026 |
| Pottery game with Opus 5 (r/ClaudeCode) Reddit (u/oxmannnn) | Social post | Aug 26, 2026 | Nov 3, 2026 |
| winchxyz/celadon README GitHub (winchxyz) | Repository | Not confirmed | Nov 3, 2026 |
| winchxyz/celadon commit history GitHub (winchxyz) | Repository | Aug 24, 2026 | Nov 3, 2026 |
| CELADON — The Long Ash winchxyz.github.io | Official site | Not confirmed | Nov 3, 2026 |
| Official game page (language check) winchxyz | Official site | Not confirmed | Nov 3, 2026 |
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