IGN writes: "There are fighting games, there are sports games and then there are sports games about fighting. And fans of the latter category are rabid in their devotion to their pugilistic passions: boxing and mixed martial arts.
Two of the best recent videogame entries in that category – Fight Night Round 4 and UFC 2009 Undisputed – were released just a month apart. And although the sports they simulate are quite different, there's significant crossover appeal for fans. Both are strong games, and they each shine in different areas. If your interest swings widely toward one sport or the other, you probably have an easy choice to make. But what if you just want to step into the ring and mess some fools up?"