Where to download a working shadowgun

anyone know where i can download a known working full version of the game shadowgun the one in the ouya store wont work because of how different the purchase thingy works already got my ouya routed and the purchase bypass installed

Their is one Amazon underground. Haven’t tested if it works yet but most likely will

The one in the Play Store works, but the shutter button doesn’t work correctly and I don’t know how to make it work.