Avatars for TwitchTags:
The overlay has feature parity with the previous avatars system and uses a game development engine, PhaserJS, at its core. This allows for easy, plug-in physics as well as the potential for extending the system at a later time to include various minigames! This is the direction I always wanted to take the original avatars system, and I'm excited at the prospect.
You can use the overlay yourself without hosting anything, as I've set it up in such a way that it can be easily hosted on GitHub Pages. It's currently hard-coded to 1920x1080 and expects to be rendered full-screen. There is also a "demo mode" available if you want to see how it looks/operates before going through the OAuth flow to get an authentication token.