If you’re a fan of the Metroid series, there’s an exciting secret waiting for you that connects two beloved titles: Metroid Zero Mission and Metroid Fusion. By linking these two games using a Game Boy Advance link cable, players can unlock the exclusive Metroid Fusion picture gallery in Metroid Zero Mission. This hidden feature adds a new layer of nostalgia and excitement for players who want to dive deeper into the lore and visuals of the Metroid universe.