Inspired by bansokou
A simple coremod that patches mod bytecodes for modern Minecraft versions.
The usage of the mod is like bansokou, put bytecode .class files to hotai folder. After running the game, the .class files will be replaced with .badiff files, which only record diff information to reduce copyright risk.

Note: this mod only can replace bytecode classes, it can not replace resources and other coremods.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.9, 1.21.10, 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Hotai is a free Minecraft Java mod. Compatible with Minecraft 1.21.9, 1.21.10, 1.21.11, 1.21 and newer. Downloaded 1,473,714 times (via CurseForge). Download it and open it directly in the game.