Since this is a legacy title, modern Android versions (Android 11 and above) may have restricted access to the Android/data folder. You might need a specialized file manager or a PC connection to move the files correctly. Shadowgun - Facebook

In Android game modding, (or OBB files) refers to the game’s cache stored on the SD card ( Android/obb/ ). Version v135 likely refers to a specific modded or patched version of the game data. This version probably includes: