maybe I'm wrong but I don't think the adventure game genre is a popular one for streaming. things like RPGs and shooters there's lots of different ways to do different things and many of them can look quite impressive, the streams are sort of like a gamers action movie. adventure games though are no fun at all to watch, it's the solving of the puzzles that's fun, if you just watch somebody else play then there's nothing to discover in the game for yourself. sure, you can get the story, but most people who enjoy the genre love the puzzles as much as the stories and characters