If your OBB file is in .zip or .rar format, extract it first. You are looking for a folder named:
com.rovio.angrybirdsgo
Inside this folder, there should be a file named:
main.187.com.rovio.angrybirdsgo.obb
Copy the entire folder com.rovio.angrybirdsgo into Android/obb/ . angry birds go 187 apk obb
The final path should look like:
Android/obb/com.rovio.angrybirdsgo/main.187.com.rovio.angrybirdsgo.obb If your OBB file is in
Download both the APK and the OBB file to a folder you can easily find, like Downloads. angry birds go 187 apk obb
You will see a "Cannot connect to Rovio servers" message. Ignore it.