https://www.gamespot.com/articles/overwatch-free-loot-boxes-for-wrecking-ball-availa/1100-6460707/

It seems like Amazon/Twitch Prime members are constantly getting free gaming goodies from Twitch. Whether it's a free bundle of PC games each month or free in-game gear for titles like Fortnite and Call of Duty: WWII, Twitch offers lots of perks for Prime members. A brand-new promotion just went live: two free Overwatch Wrecking Ball loot boxes you can secure between now and September 3.

The free loot boxes contain four randomized items for Overwatch's newest hero, the hamster-piloted mech named Wrecking Ball. In addition to those freebies, Twitch Prime members will be able to claim a Golden Loot Box in September as well as another Golden Loot Box in October.