Rock 'em Sock 'em Robots Arena (PlayStation)
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Extra arms and legs
Start a match in career mode and keep hitting your opponent's arms or legs until that piece falls off.
Fight as Ben Hurt
Win the career mode as Slamuri.
Fight as Old Blue
To play as the original blue robot, win career mode as the Blue Bomber.
Fight as Old Red
To play as the original red robot, win career mode as the Red Rocker.
Fight as Sir Haxalot
Win career mode as Head Case.
Fight as Tywrenchula
Win career mode as Stakeout.