Which unconventional marketing strategy did Epic Games use that significantly contributed to Fortnite's explosive growth?

Fortnite became one of the most successful gaming phenomena of all time, but its marketing approach was anything but conventional. Epic Games employed several innovative strategies that changed how games are marketed in the digital age. This trivia question explores one of the key marketing decisions that contributed to Fortnite's massive success and player retention. Test your knowledge about how this battle royale game disrupted traditional gaming marketing approaches!

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Creating a free-to-play battle royale mode with seasonal battle passes instead of charging upfront
Partnering exclusively with major console manufacturers for one-year exclusive release deals
Investing 90% of their initial budget in traditional television advertising campaigns
Requiring players to purchase a subscription before accessing any game content