Metastream - Watch streaming media with friends
Interactive Storytelling from Netflix - TV shows where you choose what happens next 📺
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Hero of Kendrickstone - Choose your own adventure style game
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.
Plot Shift - Collaborative storytelling