https://magpiegames.com/avatarrpg/
The world of Avatar the Last Airbender and the Legend of Korra gets an official TTRPG from Magpie Games with a kickstarter launching on August 3rd. It's a PbtA game
You can get the quickstart by signing up for the mailing list at the following link:
https://magpiegames.com/avatarrpg/
I played in a playtest through Magpie's curated play program this past weekend and I had a lot of fun. (There are currently no open slots but when there are you can sign up here: https://magpiegames.com/curated-play/)