Stadia is a cloud gaming service developed and operated by Google. It is advertised to be capable of streaming video games to players up to 4K resolution at 60 frames per second with support for high-dynamic-range via the company's numerous data centers. It is accessible through Chromecast Ultra devices, the Google Chrome web browser on personal computers as well as other Chromium-based browsers, the Stadia mobile app on supported Android smartphones, and Chrome OS tablets. There is also an experimental mode with support for all Android devices 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.