Mortal Kombat vs. DC Universe was never officially released for PC. It was developed and published by Midway Games specifically for PlayStation 3 Status of PC Availability Official Version: no native PC version

Option B: Injustice: Gods Among Us (The Spiritual Successor)

NetherRealm took the lessons from MK vs DCU and created Injustice: Gods Among Us (2013). This game has:

The game features a roster of 36 characters, including:

Free-Fall Kombat: Battles that continue in mid-air while characters are knocked from one tiered arena level to another.

See why the game was eventually removed from digital storefronts on Delisted Games