ヨーカイの森 おどるパズル
Free · play online in your browser, no download
A match-three puzzle in a forest disco, where every cleared yokai adds layers to the song and more dancers to the floor.
Official site akazukistudio.com, verified Nov 3, 2026. Linked as the place to play from the developer's own note article and listed on the developer's site, akazukistudio.com.
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.
About ヨーカイの森 おどるパズル
ヨーカイの森 おどるパズル (Yokai Keeper) is a free match-three puzzle game in the browser. You swap neighbouring yokai pieces to line up three of a kind, and clearing them sets off chains. The music is the soundtrack “ヨーカイの森” (Yokai Forest), split into parts: a stage starts with drums only, the bass joins as you progress and then the full song, and the dancing yokai below the board grow from two to seven as things liven up. Clear sounds are tuned to the song's key and rise a step with each chain. There are seven yokai pieces (a one-eyed yokai, a cat in a fox mask, a red oni, a kappa, a will-o'-the-wisp, a ghost and a round shadow), drawn as pixel art over a forest disco with a mirror ball, a DJ booth and a lit floor. Arcade mode runs through the stages to a finale in which the song “ウキウキ妖怪ダンス” plays from start to finish and you score as much as you can before it ends, with new yokai joining at the choruses for higher points; Endless mode levels up with the number of pieces cleared and changes the song. Results go on a ranking and can be shared as an image of the last board. It plays on phones and computers with nothing to download. The developer, Akazuki Studio, writes that the game was made in Unity without writing a single line of code: Claude Code built the game's systems, the music and sound handling, the usability fixes and the publishing to the website, and Codex wrote the visual code and later code. ChatGPT drew the yokai, backgrounds, interface parts and logo, and the songs were made with Suno.
How it was built
Partially verifiedIn a note article (7 Nov 2026, JST) the developer writes (in Japanese) that the puzzle game was made in Unity but that they did not write a single line of code: their part was asking AI by chat and playing the result to give feedback. The list of tools gives Claude Code (Claude Pro plan) for the game's systems, the songs and sound effects, usability fixes and publishing to the website, and Codex (through a ChatGPT plan) for the visual code and art and the later code. The first prototype, a plain match-three, was made with Claude Code, which also proposed playing all the song's stems at once and only changing their volume so the layers stay in sync, traced an iPhone Safari crash to the songs' memory use and cut each song from about 150 MB to about 70 MB in memory. From the middle of the project the two shared the work: Claude Code worked out what to fix, Codex wrote the code and Claude Code checked it. To make that possible the Unity scene is rebuilt from code every time, so each AI change can be played straight away.
- DeveloperMaking-of video on the developer's YouTube channel, Akazuki Studio Lab: “【Unity】AIとの会話だけでゲームを作る｜Claude Code＋Codexで「ヨーカイの森 おどるパズル」ができるまで” (making a game only by talking with AI). Title confirmed through YouTube oEmbed. — YouTube (Akazuki Studio Lab)
Per the note article, Codex (“the AI that writes programs, available with a ChatGPT plan”) wrote the visual code and drew the art for the screens, including the forest-disco background and interface parts, and wrote the later code; in the second half of the project it wrote the code while Claude Code planned the fixes and checked them.
Made in Unity (Unity Personal) as a WebGL build, with the scene rebuilt from code on every change so that the AI's edits could be tested at once, per the developer. The yokai pieces, their surprised and vanishing frames and the title logo were drawn with ChatGPT's image generation (three rounds for the pieces, using the soundtrack's original character art as reference), except the shadow yokai, for which the developer handed over a picture that had been drawn for them earlier; the tool list credits the backgrounds and interface parts to ChatGPT too, while the walkthrough says Codex was asked to make the pixel-art backgrounds and matching interface parts; the soundtrack “ヨーカイの森” and the finale song “ウキウキ妖怪ダンス” were made with Suno (Pro plan) and exported as stems. The developer used no drawing or music software and wrote no code. The ranking talks to the developer's own site; the game's scripts call no AI services.
- Engine / framework
- Unity
- Languages
- Not disclosed
- Team size
- Not disclosed
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- ~100% of shipped codeDeveloper Reportednote (Akazuki Studio)
“でも、わたしはプログラムを一行も書いていません。”Verification notes: AI use, tools, workflow, modes and the art and music pipeline from the developer's note article (published 7 Nov 2026, 00:40 JST), read through note's public API on 8 Nov 2026. The 100% AI code share follows the developer's statement “わたしはプログラムを一行も書いていません” (I have not written a single line of code); the article says some requests and replies are paraphrased, while prompts shown in code blocks are real. The making-of video's title and channel (Akazuki Studio Lab) were confirmed through YouTube oEmbed; the video itself was not watched. The play page and akazukistudio.com were opened on 8 Nov 2026: the site lists the game under its browser games next to Note Drop and offers about 978 songs. The Unity loader and framework script were checked: the game calls the site's own /api for the ranking and contains no AI service addresses; the data file was not inspected. The English name “YOKAI KEEPER” is written into the logo and the play page's address. Developer: Akazuki Studio, the note account akazuki_28, which writes in the first person (わたし) and presents the character あかずきちゃん; no real name, team size or location is stated. No release date is given; the game was public by the article's date. C# is not listed because the developer does not name a language. The game was not played.
Development history
The developer publishes a note article on making the game by chat with Claude Code and Codex in Unity, linking the playable version.
Developernote (Akazuki Studio)
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 on phones and computers, with nothing to download; sound recommended. The ranking uses the developer's own site.
No public metrics recorded for this listing.
Not publicly available: Concurrent players (site), Monthly revenue, Gross revenue.
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 |
|---|---|---|---|
| AIとの会話だけで、ブラウザで遊べる音楽パズルを作った方法｜Claude Code＋Codex＋Unityで「ヨーカイの森 おどるパズル」ができるまで note (Akazuki Studio) · Japanese | Devlog | Nov 7, 2026 | Nov 3, 2026 |
| ヨーカイの森 おどるパズル Akazuki Studio · Japanese | Official site | Not confirmed | Nov 3, 2026 |
| 【Unity】AIとの会話だけでゲームを作る｜Claude Code＋Codexで「ヨーカイの森 おどるパズル」ができるまで【会話劇でわかるAI制作】 YouTube (Akazuki Studio Lab) · Japanese | Social post | Not confirmed | Nov 3, 2026 |
| Official game page (language check) Akazuki Studio | Official site | Not confirmed | Nov 3, 2026 |
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