According to ESRB, this game contains: Animated Blood, Animated Violence
For parents, UFC is a tough call. On one hand, the matches can get pretty brutal with fighters mounted on top of one another while someone gets pummeled into unconsciousness looks frighteningly realistic. On the other hand, some of the real-life fighters could be ideal role-models and kids could stand to learn something about the martial arts from the way its respectfully and realistically depicted in the game. Blood splattering can be reduced via an adjustment options and outside of the scantily clad ring girl in between rounds, there's nothing overtly sexual about the game, and there's no verbal profanity either.
Long-time fans of more traditional Street Fighter II-style fighting games may be in for a surprise when it comes to UFC. You're not going to find any bouncing breasts, fireballs or upside-down spinning helicopter kicks here. UFC, while very accessible to all, could still be described as a fighting simulator, and many may be put off by its realism and its unconventional approach to ground fighting.
For fans of the actual UFC tournament who dream of fighting in the octagon, your prayers are answered. The game doesn't capture every single aspect of the competition perfectly (the pacing seems a bit more accelerated for gaming reasons), but it does come amazingly close, and I think very few will complain. I'd also like to mention that for those who choose to undertake the challenge, make sure you use an arcade stick. The game often requires two-button combination presses that are far more comfortable to pull off on an arcade stick. And it is also worth noting that the instruction manual is grossly inadequate at explaining even the most basic and fundamental concepts to grappling on the ground. Players who want to exploit all that UFC offers will need to find a FAQ file on the Internet or purchase a strategy guide.