Unlike most recent games, including high profile fighting games such as Street Fighter V and Tekken 7, Mortal Kombat 11 is not built on Unreal Engine 4.

　　On his official Twitter profile, NetherRealm Studios Programming Lead Jon Greenberg confirmed that Mortal Kombat 11 is built on the studio's custom Unreal Engine 3 version. To clarify the confusion, Jon Greenberg revealed that the mobile release is actually using Unreal Engine 4, and footage got mixed in the behind the scenes trailer.

　　To whoever keeps changing the Mortal Kombat 11 Wikipedia page to claim the game uses UE4... while I appreciate the intention and while we take this as a compliment, MK11 is built on NRS's custom UE3 version. And yes, our ver of UE3 is radically different from Epic's at this pt.

　　— Jon Greenberg (@Jontology) March 5, 2019

　　Yup. Mobile is using UE4, and footage got mixed in. We're all in the same building, and in some cases, some folks end up working on both.

　　— Jon Greenberg (@Jontology) March 5, 2019

　　Mortal Kombat 11 is shaping up to be a very good fighting game, as noted by Callum in his hands-on preview. He particularly liked the Fatal Blow mechanic.

　　My favourite and perhaps most obvious addition is the new ‘Fatal Blow’ mechanic. Your ‘Fatal Blow’ becomes available after your health reaches a critical level, you can only use it once per match, not per round, and it is blockable. It’s the big gun you keep in your back pocket. Land the blow, and you will deal out about 25% of their maximum health. A clear game changer. The animation is as overly dramatic as such a massive attack demands.

　　Mortal Kombat 11 launches on PC, PlayStation 4, Xbox One and Nintendo Switch on April 23rd.