For those using the Mastery Editor on PC, the process is straightforward:

The original game uses a binary format that can be difficult to read directly without specialized decoders. Android/Emulator Save: The critical file is usually com.rovio.gold.v2.playerprefs.xml , located in /data/data/com.rovio.gold/shared_prefs/ Access Requirements:

Enter the desired mastery values (typically between 1–100) for each bird.

To reach these files on a physical device, you typically need root access or a modified APK that has debuggable Backup Script: Community members on

Copy the file to a PC using a file manager like Total Commander. Open the XML in a text editor (like Notepad++). Modify values such as EffectiveLevel or currency counts and save. Replace the original file in the app directory. Modern Modding Context Most "new" developments are tied to the Angry Birds Epic: All Stars