If you installed the legit app from Play Store, it should be somewhere. Did the install seem normal, or was it interrupted somehow? Check everywhere in your App Drawer--maybe it's called "Guns" or "6 Guns" or "Gameloft - Six Guns" or something like that. If your phone has an option to hide apps in the App Drawer, make sure it isn't hidden.
How to remove a corrupted game
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