Amazon today announced Luna, the company's entry into the new field of cloud-based gaming. The service will be available on a variety of platforms, including iOS and Android. Starting today, gamers can sign up to request an invitation for the 'early access' period that starts next month. It will cost $6/month during 'early access'. Final launch date and pricing were not announced. The iOS version will be available from the start and runs as a web app, thereby sidestepping the App Store policies that have tripped up Google Stadia and Microsoft xCloud on iOS. The Android version will be available in a few weeks. Although gamers can use their own Bluetooth game controllers, Luna works best with the official Luna controller, which runs $50. Like Google's Stadia controller, it connects directly to the cloud via Wi-Fi, offering lower latency. The Luna controller has built-in Alexa, which can launch games by voice, for example. Luna offers Twitch integration, and makes it easy to pause a game and pick up right where you left off on another device. Luna will offer several different "channels" of games that users can subscribe to individually. Luna+ is the channel included with a basic subscription, and will include around 50 titles at some point during the Early Access period, with more added over time. The initial slate will include Resident Evil 7, Control, Tacoma, Rez Infinite, Metro Exodus, The Sexy Brutale, Overcooked! 2, and more. Ubisoft will also offer its own channel for Luna, also with around 50 titles.