Which major gaming company pioneered the 'battle pass' monetization model that has now been widely adopted across the industry as a key revenue strategy?

The gaming industry has transformed retail strategies dramatically in recent years. From physical game stores to digital marketplaces, the way games are sold and marketed has evolved significantly. This trivia question focuses on a pivotal retail strategy that changed how major gaming companies approach sales and distribution. Test your knowledge about the business side of gaming!

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