In the world of mobile gaming at the time, "APK and OBB" were magic words. They represented a workaround, a key to unlocking console-quality games on a touchscreen. The APK was the key, but the OBB—the massive data file containing the stadiums, the crowd chants, the kits, and the ball physics—was the treasure chest.
Manual installation bypasses the standard app store to place game data directly into the system's directory. fifa 11 apk obb