They're basically a group who livestreams games being repainted, which is a game like Paper Mario, where their textures gets replaced by whatever we edit them.
I can't explain it, but you guys just need to check them out yourselves!
If you know who they are, they're currently working "Super Smash Bros. Melee Repainted". Sounds chaotic and fun? Here's the link to know what's going on and what you have to do!
Here's some videos from them if you want to know what they have.
Paper Mario: The Thousand-Year Door
Super Mario Sunshine