This is a list of bugs I’ve encountered while playing Celeste/Everest with the Olympus launcher, and how to fix them. 1 Bugged light, I can see squares with “more light”, that makes gameplay hard to see Solution: replace OpenGL renderer with Vulkan. There are several ways to do this: if using Everest, you need to find everest-launch.txt (in your Celeste install folder) and change #--graphics OpenGL to --graphics Vulkan if using vanilla Celeste, you need to add /gldevice:Vulkan to CLI arguments (you can do that with launch options in Steam) Link: https://www.reddit.com/r/celestegame/comments/1bnan6m/comment/m6nly5c/?context=3 Link 2: https://www.reddit.com/r/linux_gaming/comments/1hmrtu0/comment/m4jzvgj/ ...