Prime Gaming, previously known as Twitch Prime, is a subscription service offered by Amazon as part of their Prime membership program. Prime Gaming offers members free access to a rotating selection of video games, in-game content, and other benefits.

Benefits of Prime Gaming include:

Free games: Members can get free games every month that they can keep forever, including indie titles, classic games, and new releases.
In-game content: Prime Gaming offers in-game content and items for popular games such as Apex Legends, FIFA 22, and more.
Ad-free viewing on Twitch: Members can watch their favorite streamers without any ads.
Free Twitch channel subscription: Members can subscribe to one Twitch channel for free every month, which gives them access to exclusive emotes, chat badges, and other perks.
Exclusive chat emotes: Members can access exclusive chat emotes, which are custom icons that they can use in Twitch chat.
Discounts on physical games: Members can get discounts on physical video games sold on Amazon.
Early access to select video games: Members can get early access to select video games before they are released to the general public.
To access Prime Gaming, members must have an Amazon Prime membership, which costs $12.99 per month or $119 per year in the United States. Prime Gaming is available in many countries around the world, and members can access the service by signing up for a Prime membership through Amazon's website.
In summary, Prime Gaming is a subscription service that provides members with free games, in-game content, ad-free viewing on Twitch, free Twitch channel subscriptions, exclusive chat emotes, discounts on physical games, and early access to select video games.