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Morph Ball 3D Keyring is a preorder bonus that is included with the Legacy Edition of Metroid: Samus Returns. It is a Morph Ball keychain, based on the design of the Morph Ball in Samus Returns. This Morph Ball also resembles its appearance in Metroid Prime, with the Spider Ball. It is one of two keychains released for the game; the other one, which depicts Samus Aran's Varia Suit sprite from Metroid II: Return of Samus, is a preorder perk exclusive to GameStop. The Morph Ball keyring, and the Legacy Edition of Samus Returns, are exclusive to Europe.