The new “Batman: Arkham Underworld – Killer Croc” trailer is out! Sonic Concepts Media worked on the sound editing, sound design, mixing and mastering for this project. We especially had fun editing Khary Payton’s voice at 1:34 minutes in! Batman: Arkham Underworld is a free to play game from Warner Brothers currently available on the iOS App Store for iPhone 5 or later, iPad Mini 2 or later, and 3rd Generation iPad or later: