Join the UFC Undisputed Fight Nation on Facebook
The actual Ultimate Fighting in Fight Nation is automatic; players train their fighters in individual moves using "energy" reserves that refill over time or — of course — with microtransactions, and then pit their newly leveled-up fighters against other players in matches. In fact, you can even skip those fights if you just want to see the results. The emphasis is on the training. So it's like other "click to level up" Facebook games, but sweatier.