Extension Overlay for Details in Game API
These are not new and have been used on Twitch but would be great hear too. Extensions are a new system of panels and video overlays that support entirely new forms of real-time interaction. Streamers simply install and activate Extensions through a new tab on their Twitch Dashboard, and suddenly those Extensions are available for every viewer to see and engage with.
Here is a example, the Destiny 2 Armory Overlay is a slick but powerful tool tailor-made for the Destiny community. By default, viewers will see a small icon on the corner of the video player. When they want to learn more about the streamer they’re watching, viewers can hit the icon and a translucent panel slides out to offer a deeper look at every weapon perk and armor stat on the streamer’s current loadout. Want to know the exact roll on that exotic hand cannon? You can do just that without ever leaving the video player.