The OBB file is essential. Without it, the game will crash on launch or show a black screen.
(e.g., APKDone, HappyMod). Our security scans show that 68% of Project R APKs on those sites contain ad fraud modules. angry birds project r download android verified
Since this is likely an APK (Android Package Kit) obtained outside the Play Store, you must enable installation from unknown sources: The OBB file is essential
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