Which game is widely credited with popularizing the 'loot box' microtransaction model in mainstream Western gaming markets, leading to its widespread adoption across the industry?

The gaming industry has transformed from physical sales to complex digital retail models. Microtransactions have become a cornerstone of gaming revenue, reshaping how games are monetized and marketed. This poll tests your knowledge of a pivotal moment in gaming retail innovation that changed how publishers approach in-game purchases and free-to-play models.

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Overwatch (2016)
FIFA Ultimate Team (2009)
Team Fortress 2 (2007)
Star Wars Battlefront II (2017)