Crysis 2 has 2 or 3 editions them we found some info on EA's website and toms hardware
http://www.tomshardware.com/news/crysis-nano-suit-backpack-special-edition,11106.html (http://www.tomshardware.com/news/crysis-nano-suit-backpack-special-edition,11106.html)
http://eastore.ea.com/DRHM/store?Action=DisplayProductDetailsPage&SiteID=ea&Locale=en_US&productID=201964400 (http://eastore.ea.com/DRHM/store?Action=DisplayProductDetailsPage&SiteID=ea&Locale=en_US&productID=201964400)