It can be enabled in the rulebook on the twitch options page.
To enable this, the streamer has to enter their twitch name and connect his account. He also has the ability to make the chat show up ingame.
To vote for an object, a viewer has to enter the appropriate keyword for it in the twitch chat. Visit partybox.horse for a list of all keywords and additional info.
- Twitch integration was introduced in version 1.2.00