A million years ago I got involved in Role Playing games in Second Life and I took a basic creative writing class there.
It was interesting to be dropped into a world that had already been created, design your character, and then get swept up into a story that was already in progress.
I’m not sure what is currently offered or how role playing has changed since then but there was wide variety of worlds/genres offered. Just reading about the rules of each world is a fascinating guide to world building and they usually offer character building sheets that often have very interesting ideas for creating characters that I’ve never thought about before.
I also enjoyed wandering around inside the created world.