flatlights_v1.22.1.jar is a release file of the Minecraft mod Flat Lights for Forge, made for Minecraft 1.16.5. It was published on April 3, 2024 and is 10 MB in size. For the full description, screenshots and every other version, visit the Flat Lights mod page.
How to install: Put the .jar into the mods folder (.minecraft/mods) and start Minecraft with the matching mod loader profile.