Google Stadia

Stadia was a cloud gaming service developed and operated by Google. Known in development as Project Stream, the service debuted through a closed beta in October 2018, and publicly launched in November 2019. Stadia was accessible through Chromecast Ultra and Android TV devices, on personal computers via the Google Chrome web browser and other Chromium-based browsers, Chromebooks and tablets running ChromeOS, and the Stadia mobile app on supported Android devices. There was also an experimental mode with support for all Android devices that were capable of installing the Stadia mobile app. In December 2020, Google released an iOS browser-based progressive web application for Stadia, enabling gameplay in the Safari browser.

Stadia was capable of streaming video games to players from the company's numerous data centers at up to 4K resolution and 60 frames per second, with support for high-dynamic-range (HDR) video. It offered the option to purchase games from its store, along with a selection of free-to-play games. While the base service was free and allowed users to stream at resolutions up to 1080p, a Stadia Pro monthly subscription allowed for a maximum resolution of 4K, 5.1 surround sound, HDR, and offered a growing collection of free games that—once claimed—remained in the user's library whenever they had an active subscription. Both tiers allowed users to play online multiplayer games without any additional costs. Stadia was integrated with YouTube, and its "state share" feature allowed players to launch a supported game from a save state shared by another player via permalink. The service supported Google's proprietary Stadia game controller, along with various non-Stadia controllers through USB and Bluetooth connections.