https://www.techradar.com/news/free-games-with-prime

These days it seems like Amazon is really trying to add value to its Prime membership program. Faster, cheaper deliveries, video streaming, music streaming and now free games. Yes, that’s right. Free games. 

If you're an Amazon Prime member you've probably heard about this, but if you set up an account on the company’s game streaming service, Twitch, you can link it to your Amazon Prime account to become a Twitch Prime member (or you can sign up for Twitch Prime on its own). There are a few benefits to being a Twitch Prime member, including free in-game items and no ads, but the most recent and best benefit is five free PC games each and every month, starting from March 2018.