It's a library mod. It doesn't do anything. Not really much to say about it.
Take a look at the source, if you want.
Mods that require this (and are on curseforge):
Quick facts
- Edition: Minecraft Java
- File type: .jar
- 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.
FlameLib is a free Minecraft Java mod. Downloaded 1,223,987 times (via CurseForge). Download it and open it directly in the game.