Angry Birds Epic requires a surprising amount of free space to unpack its expansion files. If your phone is full of photos and other apps, the game cannot "breathe" enough to load.
If the automatic download fails, install the OBB file yourself. You will need a file manager (like Solid Explorer or CX File Explorer).
Step 1 – Find the correct OBB file
Do not trust random "APK download" sites. Legitimate sources include:
Search for: Angry Birds Epic OBB file main.obb (version 1.3.5 or 1.3.6 is the latest stable).
Step 2 – Copy the OBB to the correct folder
The exact path is:
Internal Storage > Android > obb > com.rovio.angrybirdsepic
If the folder com.rovio.angrybirdsepic does not exist, create it manually.
The file name must match exactly, for example:
main.113.com.rovio.angrybirdsepic.obb
(where 113 is the version code).
Step 3 – Set permissions
Long-press the OBB file > Properties > Permissions = rw- rw- rw- (or 644).
Step 4 – Launch the game
Open Angry Birds Epic. The "Checking Expansion File" screen should now complete instantly.
As of 2025, Angry Birds Epic is no longer on official stores (it was delisted in 2019), but the APK + OBB files survive on archive sites. Dedicated fans have created launchers that bypass the expansion check or pre-place the files. Yet many choose to let the original check run, just for nostalgia. And occasionally, on a vintage Nexus 7 or an old iPhone 5, that progress bar still inches forward, proving that some gates are worth the wait.
Did you ever get stuck at 99%? Or do you have a trick that actually worked? Share your memories below – the kingdom of Piggy Island remembers.
How to Fix the Angry Birds Epic "Checking Expansion File" Error
If you are trying to revisit the classic turn-based RPG Angry Birds Epic and find yourself stuck on a screen that indefinitely says "Checking Expansion File," you aren't alone. Because Rovio officially removed the game from major app stores in 2019, players must now rely on sideloading APK and OBB files, which frequently triggers this specific loading error.
The "Checking Expansion File" loop typically occurs because the game's app (the APK) is unable to locate its secondary data file (the OBB), which contains the bulk of the game's assets like graphics and levels. Core Reasons for the Error
Missing OBB File: You installed the APK but didn't manually download and place the required OBB data folder.
Incorrect File Path: The OBB file is on your device but is not in the specific system folder the game expects. angry birds epic checking expansion file
Installation Order: Opening the APK before the OBB file is properly placed can sometimes cause the game to "break" the initial check. Step-by-Step Guide to Fix the Error on Android
To resolve this issue, you must manually ensure the game's data is in the right place.
Uninstall and Clear: Delete any current version of Angry Birds Epic and clear your cache.
Download the Correct Files: Ensure you have both the APK (the app installer) and the OBB (the expansion file, often named main.4821.com.rovio.gold.obb).
Create the Destination Folder: Use a file manager like the ZArchiver to navigate to Internal Storage > Android > obb. Create a new folder here exactly named com.rovio.gold.
Place the OBB File: Move your downloaded .obb file into that newly created com.rovio.gold folder.
Install the APK: Only after the OBB is in place should you install the APK file. Do not open it yet.
Restart and Launch: Close all background apps, then launch Angry Birds Epic. It should now skip the expansion check and begin "Loading Balancing Data". Fixing the Error on PC (BlueStacks)
If you are playing on a computer using an emulator, the process is similar but requires the BlueStacks Media Manager to bridge your Windows files to the Android system.
Import the OBB: Open the Media Manager in BlueStacks 5 and select "Import From Windows" to bring in your OBB file.
Move to Android OBB: Use a file manager within BlueStacks to cut that file from the SharedFolder and paste it into Internal Storage > Android > obb > com.rovio.gold.
Run the App: Once moved, drag the APK into the BlueStacks window to install and play. Common Issues After the Fix
Resolution Bugs: On modern high-resolution phones, the game may look stretched or cut off. This is a compatibility issue with older software.
No Progress: Unless you were previously linked to a Rovio Account before they were discontinued, you may have to start a new save file.
Are you trying to fix this on a specific Android version, or are you having trouble finding the correct OBB file download? Angry Birds Epic Wont Return (probably). Angry Birds Epic requires a surprising amount of
Here’s a concise, helpful review you can use:
Angry Birds Epic — Checking Expansion File
I encountered an issue where the game stalls on “Checking expansion file.” Restarting the app doesn’t help. What worked for me:
Outcome: After clearing cache and switching to Wi‑Fi, the expansion file downloaded and the game loaded normally. If these steps don’t work, the problem may be on the server side — try again later.
Tone: Helpful, concise, step‑by‑step with clear last‑resort advice.
Fixing the "Checking Expansion File" screen in Angry Birds Epic
requires manually placing the OBB game data folder on your Android device.
Because Rovio discontinued Angry Birds Epic and removed it from official app stores, the game can no longer fetch its required secondary expansion files directly from the servers. When you download and open just the APK file, the app hangs indefinitely on the "Checking Expansion File" loop.
Below is a complete, ready-to-publish blog post to help gamers bypass this error.
How to Fix the "Checking Expansion File" Loop in Angry Birds Epic 🕹️ The Nostalgia Trap
Angry Birds Epic remains one of the most unique and beloved turn-based RPGs to ever hit mobile devices. Unfortunately, since Rovio retired the game from official app stores, players looking to relive the adventure have to resort to sideloading APK files.
If you have tried to reinstall the game recently, you have likely run into the dreaded black loading screen stuck on "Checking Expansion File...".
Because the game's official download servers are no longer active, the app cannot automatically fetch the heavy data files (known as OBB or expansion files) it needs to run.
Here is exactly how to bypass this screen on Android or PC emulators and get right back to battling green pigs. 🛠️ Step-by-Step Fix for Android & Emulators
To bypass the screen, you have to manually give the game the expansion folder it is searching for. 1. Download Both the APK and OBB Files Search for: Angry Birds Epic OBB file main
When sourcing your files from community-trusted archives or third-party platforms like Uptodown Android Archives, make sure you download the XAPK or a bundle that contains both: The .apk installation file.
The .obb data file (usually named something like main.obbfle...). 2. Install the APK (But Do Not Open It Yet)
Click on the APK to install the game on your device or drop it into your PC emulator like BlueStacks.
⚠️ Crucial Step: Once the installation finishes, do not open the game. If you open it, it will immediately trigger the loop and fail. 3. Create the Proper OBB Folder
Open your device's built-in file manager and navigate to your internal storage. Go to the Android folder. Open the obb folder.
Create a brand new folder inside it and name it exactly: com.rovio.gold 4. Move Your Expansion File
Take the .obb file you downloaded in Step 1 and move (or copy) it directly into that newly created com.rovio.gold folder. 5. Clear Cache and Launch
To make sure your device recognizes the manually placed files: Angry Birds Epic Wont Return (probably).
When the "Checking expansion file" message appears in Angry Birds Epic , it usually means the game cannot locate its OBB (Opaque Binary Blob)
. This commonly occurs if you installed the APK without its accompanying data folder or if permissions are blocking access. Common Fixes for Android Verify OBB Placement : Ensure your OBB file (typically named ://xxx.com.rovio.gold.obb ) is in the correct directory: /Internal Storage/Android/obb/com.rovio.gold/ com.rovio.gold folder doesn't exist, you must create it manually. Manual Reinstallation Order
: If you are installing from an external source, delete all current game files and reinstall the OBB file first , followed by the APK. Enable Storage Permissions : Check your device settings under Apps > Angry Birds Epic > Permissions and ensure "Storage" or "Files and Media" is allowed. Use an XAPK Installer : For easier setup, download the game as an file and use an XAPK installer from sites like
, which automatically places the expansion files in the correct folders. Fixes for iOS Check Purchased History
: Since the game is no longer on the public App Store, go to App Store > Profile > Purchased to redownload it if you have owned it before. App Backup Toggle
: If stuck on a similar loading screen, some users recommend going to
Settings > [Your Name] > iCloud > Manage Account Storage > Backups , selecting your device, and toggling the Angry Birds Epic before reinstalling. Fixes for PC (BlueStacks/Emulators) Media Manager Import BlueStacks Media Manager
to import the OBB file from Windows, then use a file manager app within the emulator to move it to the Android/obb/com.rovio.gold video tutorial for your device?
Try these solutions in order, from simplest to most technical.