Stadia is one option if you have capable internet service. Source: over 2 years ago

Purchase or pre-order any game for $59.99 USD or more launching by October 10, 2021 and we’ll help you play on the biggest screen you own with a Stadia Premiere Edition (shipping charges may apply, see full terms here). Source: over 2 years ago

Premiere is available from the Google store in the UK and I see it also in the the US. Which country are you in? Source: almost 3 years ago

For 4K, there is no other option without purchasing used or purchasing the Stadia Premiere Bundle. Source: about 3 years ago

The new generation of survival horror is here. Resident Evil Village comes to Stadia on May 7th across all of your favorite screens. Pre-order or buy before May 21 at midnight PT and we’ll help you play on the biggest screen in your life with a free Stadia Premiere Edition while supplies last (terms apply). That’s Resident Evil Village, a Stadia Controller, and a Chromecast Ultra - everything you’ll need to thwart... Source: about 3 years ago

It was called pulse - https://blog.twitch.tv/en/2017/03/06/introducing-pulse-an-always-on-way-for-streamers-and-viewers-to-connect-57d3460aa9f0. Source: over 1 year ago