This app was mentioned in 3 comments, with an average of 1.00 upvote
Real Steel Boxing Champions | 4.3 rating | Free with IAP | 10,000,000+ downloads | Search manually
> Build your Robot Fighting in this ultimate action and sports adventure. Unleash furious attacks in one-one combat using special moves, jabs, punches with legendary parts of your favorite heroes Atom, Zeus, Midas, NoisyBoy and new ...
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The game you're speaking of sounds like Real Steel Boxing Champions