Fusionfall was a free to play MMO created by Cartoon Network. After being shut down, several different projects have been created to revive and preserve the game.
You can play the game on the same server I did, after visiting the Fusionfall: Retrobution Discord server.
Here's the link: https://discord.gg/3qhqe2yv2f
▶️ DTube
▶️ IPFS