Google Takes Aim at Apple with New Nexus 7, Google Play Games and Chromecast: Chromecast, another feature Google introduced today, is an HDMI accessory that functions similarly to AirPlay, allowing users to mirror content from a tablet, smartphone, or computer. Chromecast works with video, music, and apps like Netflix, and can be used with a number of devices, including iPhones and iPads. Chromecast, which will retail for $35, will be available later today through Best Buy, Amazon, and the Google Play Store.