Listed below are three versions of the game that differ from the regular version and the bonuses they contain.

Pre-Order Bonus
Darkseid can be used as an extra character if people pre-order any copy of Injustice 2

Digital Deluxe Edition
The Digital Deluxe Edition will come with 3 DLC characters, a Power Girl skin and a gear shader.

Ultimate Edition
The Ultimate Edition will come with 9 DLC characters, 3 Premier Skins and 2 gear shaders.