Starter Edition of FINAL FANTASY XIV Online with Twitch Prime
I hope this is the right place to post! FFXIV is available for download through your Amazon subscription if you've linked it to Twitch! I think normally you can play a limited version up to level 30 for free, after which you have to pay for a sub; but with the code from Amazon/Twitch you can play characters up to level 50.
I've never played a FF game before this, and just started and I love how much there is to do + all the worldbuilding!