With Injustice: Gods Among Us right around the corner for its release, if you pre-order from GameStop, you'll receive the Red Son pack which is based on the Red Son alternate universe where Superman meets Soviet Russia instead of Smallville. 20 additional unique missions plus 3 costumes for Superman, Wonder Woman, and Grundy would be included. Check out the video below for new gameplay footage and the developer's discussion on the content of the Red Son pack!
Injustice: Gods Among Us is due for release April 16, 2013.