https://www.gamespot.com/articles/last-chance-every-free-amazon-twitch-prime-game-an/1100-6458895/

Being an Amazon Prime member gets you more than just streaming videos and free two-day shipping. For no additional charge, you can link up your Twitch account to become a Twitch Prime member, which grants you a bunch of free gaming goodies each month. These range from PC games to free in-game items for some of the most popular games on the planet--including Fortnite. Here's a guide to all the free gear Twitch Prime members can collect in May 2018.

For starters, you can get Fortnite Twitch Prime Pack #2. It includes an exclusive outfit, pickaxe, back bling, and emote, all available at the click of a button. Next up is a selection of six free PC games you can download in May to keep and play forever. These include games like Gone Home and Psychonauts.