The expansion file naming convention includes the app version code. If the user has updated the APK but the expansion file has not been updated (or the old OBB file is not forward-compatible), the verification logic will reject the file. This ensures that the game engine does not attempt to load assets designed for a previous version of the game, which would cause runtime errors or crashes.
The "Checking Expansion File" screen is a bottleneck. Several common failure modes cause the application to stall or loop at this screen: angry birds epic checking expansion file
The is a loading screen loop that prevents players from launching Angry Birds Epic on Android devices or emulators. This issue occurs because Rovio officially delisted the game from app stores , meaning the application cannot automatically download its required OBB data asset expansion files from official servers. Players side-loading the application must manually bundle the matching .apk and .obb files inside the designated com.rovio.gold root folder hierarchy to bypass the check. The expansion file naming convention includes the app
The expansion file typically carries the naming convention: main.<version_code>.<package_name>.obb The "Checking Expansion File" screen is a bottleneck