Change the value to something high, like gamma:100.0 or gamma:1000.0 .
This is the quickest way to see in the dark without downloading external files. It works by pushing the game's internal brightness settings past their normal limits. Close Minecraft. Fullbright 1.17
The Fullbright mod on Modrinth is a lightweight choice for 1.17. Change the value to something high, like gamma:100
Press Win + R , type %appdata%\.minecraft , and hit Enter. Step 3: Find the options.txt file and open it with Notepad. Change the value to something high
Search for the line that says gamma:1.0 (or gamma:0.0 ).