Street Fighter X Tekken: Complete Pack includes standard version of the game and:

• Additional 12 Characters Pack DLC - Street Fighter and 6 Tekken characters join the battle, for a total of 12 new fighters!
• Street Fighter Swap Costume Complete Pack DLC - A pack featuring the swap costumes for the 19 Street Fighter characters. The SF cast take on the look of Tekken characters with these new outfits.
• Tekken Swap Costume Complete Pack DLC - A pack featuring the swap costumes for the 19 Tekken characters. The TK cast takes on the look of the Street Fighter characters with these new outfits.