Which gaming company pioneered the 'battle pass' monetization model that has now become an industry standard for free-to-play games?

The gaming industry has transformed from simple entertainment to complex virtual ecosystems with sophisticated marketing strategies. In-game advertising and product placement have become billion-dollar revenue streams, with brands competing for visibility in these highly engaging spaces. How well do you understand the evolution and impact of product marketing in virtual worlds? Test your knowledge about how real brands have integrated with gaming experiences and the strategies that have proven most successful with player communities.

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Valve Corporation (with Dota 2)
Epic Games (with Fortnite)
Riot Games (with League of Legends)
Activision Blizzard (with Call of Duty)