There needs to be a game set in the ATLA world. At the beginning, a person can choose to be a bender (any type) or a nonbender. There would be no storyline, just a multiplayer world with the same geography, cities, etc. People could just roam the world getting into battles, destroying cabbage carts, stealing bending scrolls, and other stuff. Finally, as a person would do more fighting or subquests (things like taking down a firenation ship, defeating a band of waterbenders, things like that) they would get better at fighting. For example, if a firebender was playing for long enough, he might learn to lightning bend. Think about this idea, I hope you like it.
in New on Video Game Ideas