No longer need to invite to join, now fire TV devices in the United States can try Amazon Luna for free. The cloud game service started closed testing last year, and only invited users can try it out. Initially, customers needed an invitation to buy Luna handles, but Amazon now says it's open to everyone.

On Amazon's FAQ page, users can use Luna on fire TV by downloading the app. On Amazon's support page, it also announced a list of Luna compatible fire TV devices. These devices include fire TV stick Lite, fire TV stick (2nd and 3rd generation), fire TV stick 4K, fire TV (3rd generation), fire TV cube, Toshiba fire TV and insignia fire TV.

Sign up for Luna and you can try Luna plus for seven days for free. After that, the monthly fee is $5.99. You can play games including "control", "Subway: Escape" and "super RV race". In addition, there is a subscription to Ubisoft plus channel at $14.99 per month, including games such as "Assassin's Creed Hall of souls".