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Cross-Platform In-App Purchases, Store Progression & Automation: Apple StoreKit 2, Google Play Billing, Steam & Epic

November 10, 2026

TL;DR: Cross-platform monetization and player progression collapse when game engines treat stores as generic payment switches. Apple StoreKit 2 (signed JWS tokens), Google Play Billing (BillingClient 7+ with mandatory…
Mobile Cross-Platform App Store Play Store PC / Steam Storekit Game Center REST & Web APIs Automation Game Engineering

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