Which subscription model innovation did Fortnite pioneer that has since been widely adopted across the gaming industry?

The virtual goods market in gaming has exploded in recent years, with in-game purchases becoming a primary revenue model for many game developers. From cosmetic skins to battle passes, subscription models in gaming have evolved dramatically, creating entirely new economic ecosystems within virtual worlds. Test your knowledge about how major gaming companies monetize their virtual universes!

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Battle Pass (seasonal content subscription with tiered rewards)
Game Pass (all-you-can-play library subscription)
Premium Currency Subscription (monthly virtual currency stipend)
Cross-Platform Subscription (single subscription valid across all gaming platforms)