Repo ↗ · Source README ↗ · Markdown & license bundle

Image reference (original game): The Binding of Isaac: Repentance+ · original-game artwork, provided by IGDB. Image rights remain with their respective owners. This illustrates the referenced original game, not the actual visuals of this rewrite or mod.

Source maintainer: chiikabu · Revision: 35123f12d0e3 · Catalogued: 2026-10-12

Source license: Documentation license not confirmed · Article: Independent introduction

This is an independently written project introduction, not a reproduction or translation of the README. Documentation permission is unconfirmed or limited in scope. Read the linked repository for the full instructions. Feature and progress claims come from the source documentation and have not been independently playtested here.

The Browsing of Isaac is a project that recompiles the Windows executable of The Binding of Isaac: Repentance+ to WebAssembly, aiming to run the full game in a browser tab. According to the README, it is not a remake or an emulator but uses the original game code, so items, synergies, and existing bugs should behave as on PC. It was ported by chiikabu and uses function signatures from REPENTOGON.

For controls and features, the README states support for desktop and mobile browsers, with touch-based play on phones and no extra on-screen buttons; keyboard and controller mappings are also provided. Saves are kept in the browser and can be exported or imported via EDIT FILE on the file select screen, including PC .dat saves. Mods can be searched and installed from the in-game MODS menu’s MOD BROWSER, including Lua mods, and the game restarts after installation.

Technically, the project involves converting a native Windows binary to WebAssembly and handling input, audio, saves, and mod loading in the browser. The README notes that users need their own copy of the game, as the repository contains no game files, and build instructions are in docs/DEVELOPING.md. It is a fan project unaffiliated with Nicalis or Edmund McMillen. It is released and playable at tboi.online, though actual compatibility and performance may vary by browser and device.