Fortnite, one of the most popular games in the world, is now available on Amazon Luna cloud gaming in the US, Canada, Germany, and the UK. To play at no additional cost, you need to either be Prime member or be subscribed to the Luna+ channel, which costs $9.99/month and includes just over 100 games. It’s unclear whether Fortnite is only free for Prime members during May, as part of May’s bundle of free games, or if it will be free indefinitely, as I’ve seen reports of both. I’ve reached out to Amazon for clarification and will update this post if I hear back. While there are many Luna compatible devices and controllers, the best way is through a modern Fire TV device and the Luna Controller, which is currently on sale for $49.99. Update: Amazon says Fortnite will be free for Prime members indefinitely.