I think this one is very underrated. In general i think the gen 6 MK series is better than people give credit for. Particularly this one, you're spoiled for content, you have the core fighting game experience, namely arcade etc. But also included is a puzzle konbat mode which is lots of fun, a chess kombat mode which reminds me of unholy war on the ps1 or something similar. But the big one is the revamped konquest mode.
The konquest mode is now a full fledged game in of itself, basically a tutorial for playing every character blended with a open world adventure and story. I genuinely think this is the best feature of the game; as what you get out of it, is probably the most chilled out fighting game experience possible. It's honestly very zen, there's virtually no konsequences (hehe) to loss or failure, and you're free to roam around collecting currency for the vast unlockables, doing fun little quests and taking in the very calming atmosphere, never has hell itself been so chill.