What customer experience strategy did Epic Games Store primarily use to rapidly acquire users when competing against Steam's established marketplace?

The gaming industry has seen various digital distribution platforms compete for market share through different customer acquisition strategies. Epic Games Store made a bold entrance into a market dominated by Steam, using a distinctive approach to build its user base rapidly. How well do you understand the key differentiator in Epic's customer acquisition strategy that helped it gain millions of users in a relatively short period?

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Offering free games every week to users who created an account
Providing a more sophisticated user interface with better discovery algorithms
Launching with lower hardware requirements allowing more gamers to use the platform
Implementing a subscription model with significantly lower monthly fees than competitors