How to Install

Before installing Yu-Gi-Oh! Duel Generation 121a, you have to make sure that your phone has permission to install third-party apps.

1. Open your device's settings.
2. Tap "Security" in the "Personal" section.
3. Slide "Unknwon Sources" to "On".
4. Tap "OK" to confirm your changes.

After allowing Unknown Sources, you can install the APK file of Yu-Gi-Oh! Duel Generation 121a.

1. Open your "File Manager" or "File Explorer".
2. Open the directory where you saved the APK file you have downloaded. (Usually in "Downloads" folder)
3. Tap the APK file.
4. Tap "Install".