I worked up a rough translation of one of the collaborative story-telling games linked in this post: Pre-Surrealist Games. It's called "The Impromptu Tale," and there's a lot to it that modern tabletop gamers may find familiar.
I wrote and programmed a group role-playing app! The gist is everyone playing needs to be in the same room and have the app on their smartphone, and then they perform together a series of challenges. It's for 3-10 players, takes 20-45 min, ages 10+. The app is free, doesn't have ads, and doesn't track your info beyond what is strictly needed to run the game. [more inside]