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Are you ready to get into mechs and enter the arena to compete with other robots to see who comes out the winner? We sure hope you are, because only the best survive in Mech Arena. But ...

First, launch Mech Arena on your device. In the main menu, press the Hangar button. Tap the Mailbox button at the top of the screen. Then, press the green 'Promo Codes' button at the bottom of the ...