Multiplayer only. Want single player? Don't bother.
Anyone who is thinking about picking this up already knows what the draw is here: Ultimate Mortal Kombat 3 on the go and with online multiplayer. Anybody else who wonders what the fuss is about need not apply. Single player experience is non-existent too since the usual impossible to beat CPU fighters after you win three times are back to read your mind once again. Puzzle Kombat is back and is still online as well, but it is merely a slight diversion from the real game here and is an uglier version of Super Puzzle Fighter II Turbo and less fun to play as well.
As far as UMK3 online, it is easy to get into matches and you play the same opponent back to back as many times as you want and as long as your network connection isn't being clogged up, latency issues won't be too much of a problem.
Conclusion: UMK3 online is the reason to get this and it controls well and performs admirably online too. If that is what you are looking for, then be sure to pick it up!