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THIS MOD REQUIRES LIBRARIANLIB AND FORGELIN! Can be found here: https://minecraft.curseforge.com/projects/librarianlib


Refraction was originally a TMT mod and has been in heavy development ever since. It has gone multiple rewrites and has undergone heavy optimizations for the past three months. We hope you enjoy what we've been working on.

Refraction is a mod that is based on the manipulation of light and lasers. You do so by making arrays of magnifiers to collect sunlight into focused beams or by making laser blocks that require glowstone. Light beams in this mod can be split and merged using half mirrors, prisms, and reflection chambers in order to produce different colors of light, and colors of light in the mod all have special effects that will ensure you no boredom ever. For example, a cyan light beam attracts any entities towards the source while a purple beam disperses entities away from the source.


If you experience any bugs, please report them on the issue tracker found here: https://github.com/TeamWizardry/TMT-Refraction/issues

And if you would like to join our discord to hang out or ask questions: https://discord.gg/tGFYcWz


Getting Started:

You need to craft an information tablet:

Information Tablet Crafting Recipe

Laser Pointer



  • Q: Can I use this mod in my modpack, public or otherwise?
    A: Yes. Feel free to use it. A notification to us would be nice though. :)

  • Q: I found a bug! What do I do?
    A: Press the Issues button and report it there or tell us in our discord server in the #refraction channel.

  • Q: Wtf do I do? This mod is complicated! Or how do I use/do [X]?
    A: It's easy. Read the wiki/guide and let it start you off. The rest is up to your imagination. If you have any questions regarding the mod, you can ask us in our discord server in #refraction.

  • Q: Is this going to break my world between updates or something?
    A: If you get a warning of blocks being missing, don't worry, nothing will go corrupt but DO back up.

  • Q: What is this feature? Why does this even exist? ... WHY?!
    A: :)

Some videos and gifs: