Which gaming subscription service achieved the highest customer retention rate improvement within its first year of implementation?

The gaming industry has evolved dramatically in how it retains customers, with subscription services becoming a cornerstone strategy. Major platforms have implemented various subscription models with different success rates and customer lifetime value impacts. This trivia question explores how one particular strategy transformed a gaming giant's customer retention metrics in recent years.

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Xbox Game Pass (70% improvement in retention compared to standard purchase model)
PlayStation Plus Premium (55% improvement in retention compared to standard purchase model)
Nintendo Switch Online Expansion Pack (48% improvement in retention compared to standard purchase model)
EA Play Pro (62% improvement in retention compared to standard purchase model)