Minecraft Forums

Make sure you close/exit Minecraft before you start

1. Open your .minecraft folder (the place where the resource pack and mods folders are stored)

2. Find and open options.txt in your preferred text editor (notepad works)

3. Find and change the gamma to 100.0

4. Save and exit the text editor (important to remember to save)

5. If done correctly you will now have fullbright when you open the game again but if its still too complicated for you and you use windows there is a link to a video tutorial I found on youtube below (credit goes to the uploader of that vid). If you do not use windows simply search for a tutorial on how to install a resource pack (it should show you how to get to the resource pack folder and from there you should only need to go up 1 folder).

video tutorial (windows)

Note: I searched the forum before making this tutorial to make sure there was not a thread like this already posted.

thanks

It should be noted that this no longer works as of 1.19, and good riddance (they still need to fix in-game brightness levels so a light level of 0 is completely pitch black, no matter the brightness setting, no chance of ever seeing anything even if you use the sun as a backlight. My own fix is so effective that even if I hadn't also patched the gamma exploit it would still be useless in complete darkness; use Night Vision to see in the dark. I also imagine that servers can detect this by monitoring player activities, if they see somebody caving as if they can perfectly see despite not having Night Vision in effect then they must be using a gamma exploit or display adjusted to max out visibility of dark shades (this will still work since 1.19), just as somebody who tunnels directly to every diamond deposit must be using x-ray; this does have a server-side fix though (send the wrong block data to the client, e.g. stone/deepslate in place of ores, unless they are directly visible).