Google began launching 4K Stadia games on the web, and before the release, 4K games were limited to Chromecast Ultra and TV. Players can confirm by opening the in-game menu (Shift-Tab or the Stadia button on the handle) and clicking Connect. In the Data Use state, a green 4K icon is displayed.
Theoretically, 4K Stadia games need to be displayed as “excellent” Internet connections, but we also have 4K on internet connections that appear as “good” or “OK”. For internet connections over 35Mbps, the $9.99-a-month Stadia Pro subscription will provide “best visual quality.” So far, this option and HDR can only be set on mobile apps, not on stadia.com.
As of Wednesday evening, several gamers around the world had met 4K Stadia online, and Google could issue an official announcement as early as Thursday morning. From launching new games to downloading screenshots and clips online, this has been a busy week for Stadia. By the end of March, Google will add web support for Stadia Controller and expanded Google Assistant availability.