You cannot install a mod over an official installation. Back up your save data if you have a legitimate account (though it likely won't transfer).
Most links on YouTube descriptions or sketchy forums lead to dead downloads or malware. The game is abandonware; its development ceased years ago. While you can find working mods on specialized Russian or Vietnamese modding forums (version 1.5.1 specifically), the effort required to avoid viruses is often not worth it. yugioh duel generation mod unlock all cards link
Go to Settings > Security > Enable "Install from unknown sources." You cannot install a mod over an official installation
If you have searched for , you have likely waded through a sea of fake survey scams, broken APKs, and dead MediaFire links. This article analyzes the reality of those mods, where they come from, and what actually works. The Myth of the "One Link" Before we dive into technical steps, it is critical to understand the architecture of Duel Generation . The game was released in 2014 and received its final update (featuring Pendulum Summoning) around 2017. The game is no longer supported in official app stores, which means it exists only as an APK + OBB data file . The game is abandonware; its development ceased years ago
Navigate to Internal Storage > Android > obb > com.konami.ygodg . Paste the OBB file here. If the folder doesn't exist, create it.