Comes from the Luanti (Minetest) troubleshooting page

im jus tryin to ply gem...

This MUST be a joke. Like - "Hmm increase the gamma. If that doesn't help, change your monitor. If you STILL WANT better brightness, maybe like - uhmmmm modify the games glsl fragment shader to render the image to the screen?... yeah, do that."

There is no way this is meant seriously... but if it is, i do enjoy that..