THE BINDING — 地下室的束缚
Free · play online in your browser, no download
A browser fan remake of The Binding of Isaac's basement roguelike: twelve floors, thirteen bosses and fifty-five items, with every graphic drawn by code.
Official site yisa.codefather.cn, verified Nov 3, 2026. Linked as “本游戏作品” (this game) in the developer's own Bilibili video description and as the online demo in the developer's GitHub README; the title screen links back to the developer's Bilibili space.
Rights holder / original work: The Binding of Isaac (Edmund McMillen and Florian Himsl; Rebirth published by Nicalis)
The README calls the game a tribute fan remake (致敬性同人复刻) of The Binding of Isaac and its Rebirth edition, not affiliated with or authorised by the original's creators or publisher. It reuses the original's item, enemy, boss and chapter names, and its floor generation follows a published analysis of the original's algorithm; the README says it contains none of the original's art, audio or code, since every graphic is drawn and every sound synthesised in code. The game's own code is released under the MIT licence. (GitHub (liyupi))
VibeGameDB lists this game only to document that it was made with AI coding tools. We do not host it, we do not represent the rights holder, and listing it does not mean it is licensed.
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 (vanilla JavaScript, no dependencies; MIT licence per the README), with Playwright testsFree
Download from the GitHub releases page.
Desktop · Official link verified Nov 3, 2026.
About THE BINDING — 地下室的束缚
A top-down roguelike dungeon shooter for the browser that, in its README's words, recreates the core gameplay of The Binding of Isaac. You move with WASD and fire tears with the arrow keys (a virtual stick and four fire buttons appear on phones) through twelve floors named after the original's chapters, from the Basement to the Chest, fighting eleven kinds of enemy and thirteen bosses and collecting 55 stackable passive items, with a shop from the second floor. Floors are generated with the original's algorithm as described in a published reverse-engineering analysis, and boss health was tuned against damage measured by a test bot. All graphics are drawn in code on a Canvas 2D and all sounds are synthesised with WebAudio; there are no image or audio files. The developer, 程序员鱼皮 (鱼皮; GitHub account liyupi), a Bilibili creator, says in a video that the game was built with Cursor and Claude Opus 5 in a single conversation in which AI wrote more than 5,000 lines of code, and that the developer did not write a line. The README calls it a tribute fan remake, not affiliated with or authorised by the original's creators (see the IP notice). Free in the browser on desktop and mobile, with the source code on GitHub under the MIT licence. The interface is in Simplified Chinese.
How it was built
Partially verifiedThe developer's Bilibili video, titled “27 岁，我终于做出了自己的游戏！但是一行代码都没写” (“At 27 I finally made my own game! But I didn't write a single line of code”), says in its description that with “只用一轮对话” (just one round of conversation) AI wrote more than 5,000 lines of code on its own to make a web version of The Binding of Isaac, and that the video records the whole process of building the web game from scratch “用 Cursor + Claude Opus 5” (with Cursor and Claude Opus 5): from prompt design to the AI working on its own, writing code, opening the browser to run the game, checking screenshots and finding and fixing bugs. The video also shows deployment with EdgeOne Makers and publishing the code through GitHub MCP. The README says the whole game was written with AI programming (Vibe Coding), in about 5 hours 20 minutes.
- DeveloperREADME: “整个游戏是用 AI 编程（Vibe Coding）写出来的” (the whole game was written with AI programming, Vibe Coding), from the choice of technology and research into the dungeon algorithm to the boss state machines, the item icons and automated self-tests and difficulty tuning, in about 5 hours 20 minutes. The README does not name the tools. — GitHub (liyupi)
Built in one long session on 25 Jul 2026, per the development report in the repository (10:21 to 15:40, 319 minutes, about 150 of them waiting on bot playtests while seven agents ran in parallel on the machine). The game is vanilla ES2020 JavaScript on a hand-written Canvas 2D loop, with no build step and no dependencies, so it can be opened straight from index.html; sound is synthesised with WebAudio. Floor generation follows Boris the Brave's reverse-engineering analysis of the original's dungeon algorithm, and the mechanics, names and chapter order follow the Binding of Isaac Rebirth wiki. Testing uses Python Playwright driving the real page plus an in-page bot that plays through the same inputs as a player: structural smoke tests, 70 functional assertions, 600 random dungeon seeds, boss-by-boss fights and a DPS calibration used to set exponential boss health. The report puts the game at 5,039 lines at the end of that session; the README now lists 7,921 lines plus 1,604 lines of tests. The site is deployed with Tencent EdgeOne Makers, per the video. No AI runs in the game.
- Engine / framework
- None (vanilla JavaScript, Canvas 2D)
- Languages
- JavaScript
- Team size
- Not disclosed
- Initial build time
- About 5 hours 20 minutes in one AI conversation (25 Jul 2026)Developer ReportedGitHub (liyupi)
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- ~100% of shipped codeDeveloper ReportedBilibili (程序员鱼皮)
“只用一轮对话，让 AI 自己写了 5000 多行代码，做出了以撒的结合网页版”- 27 岁，我终于做出了自己的游戏！但是一行代码都没写 (Bilibili)
- liyupi/binding-of-isaac-webgame (GitHub)
- 开发过程报告 (development report, REPORT.md)
Verification notes: AI use from the description of the developer's Bilibili video (published 31 Jul 2026, 07:14 UTC; 5 min 11 s), read through Bilibili's public video data on 7 Nov 2026; gameplay, technology, tests, line counts, licence and the disclaimer from the GitHub README; session times from REPORT.md in the same repository; both read from GitHub's raw files on 7 Nov 2026. The Bilibili page itself and the GitHub API could not be opened from the research environment. The 100% AI code share rests on the video's title (“一行代码都没写”, I didn't write a single line of code) and its description (AI wrote more than 5,000 lines on its own). Cursor is recorded as the tool, with Claude Opus 5 as the model the video names; the README and report name neither. The figures differ by date: the video speaks of 5,000+ lines and the report of 5,039 lines after the 25 Jul session, while the README now lists 7,921 lines, so the code grew after that session; whether the later additions were also AI-written is not stated. The title “【B站AI创造公开赛】” marks the video as an entry in a Bilibili AI creation contest; no result is recorded. Developer: the game's title screen links the Bilibili space of 程序员鱼皮 (mid 12890453) and the GitHub account liyupi; no real name is given in these sources, and the video description also promotes the developer's free AI programming tutorial and the codefather.cn learning site. The Bilibili data showed 416,375 views on 7 Nov 2026 (observed; not a metric). The live site's scripts were checked and contain no network calls and no calls to AI services. The game was not played.
Development history
The game is built in a single AI session of 319 minutes (10:21 to 15:40), per the development report.
DeveloperGitHub (liyupi)The developer's Bilibili video presents the game, built with Cursor and Claude Opus 5, and links the live site.
DeveloperBilibili (程序员鱼皮)
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; on phones a virtual stick and fire buttons appear (landscape gives a larger view).
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 |
|---|---|---|---|
| 27 岁，我终于做出了自己的游戏！但是一行代码都没写【B站AI创造公开赛】 Bilibili (程序员鱼皮) · Chinese (Simplified) | Social post | Jul 31, 2026 | Nov 3, 2026 |
| THE BINDING — 地下室的束缚 程序员鱼皮 (codefather.cn) · Chinese (Simplified) | Official site | Not confirmed | Nov 3, 2026 |
| THE BINDING · 地下室的束缚 (README) GitHub (liyupi) · Chinese (Simplified) | Repository | Not confirmed | Nov 3, 2026 |
| 开发过程报告 · case6 肉鸽地牢游戏 (REPORT.md) GitHub (liyupi) · Chinese (Simplified) | Repository | Not confirmed | Nov 3, 2026 |
| Official game page (language check) 程序员鱼皮 | Official site | Not confirmed | Nov 3, 2026 |
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