There are a lot of things that are similar to Twitch on Facebook Gaming; some of these things are:

Supporting: Supporting is the equivalent to Subscribing on Twitch. It costs the same and gives you a badge and access to the Page stickers.

Stickers: Stickers are the equivalent to Twitch Channel Emotes. Stickers are only available on the Profile you Support the Page with (this mean if you Support and chat from a Page you will not have access to the stickers).

Stars: Stars are the equivalent to Bits and their exchange rate is $0.01 per Star.

Community Manager: Community Manager’s are the Moderators of the chat; you’ll see the familiar faces you’re used to here and ready to help with whatever you need.