The Mirage library is needed for some mods on Minecraft that work with color light sources. One of them is Luminia, which adds glow sticks. The library itself does not add new content to the game and there is no need to install it separately.
How to install Mirage library
- Make sure you have installed Minecraft Forge.
- Download the mod for your version of the game.
- Put it in the ‘mods’ folder, which is located in the game folder.