Z-Axis allows players to gain control over three mutants: Wolverine, Iceman and Nightcrawler. Of the three, my favorite ended up being Nightcrawler. Even with Nightcrawler turning out to be my favorite, he had limitations in what he could do with teleporting. Each of the three mutants plays different from one another. Wolverine is the brawler who scraps with enemies that are thrown at him. Wolverine’s portion of the game is a beat-em’ up – straight to the point if you ask me. Out of the three, Wolverine’s was the least intriguing. Iceman is only able to ice slide around levels. His objectives are to put out fires and fend off enemies while in the air. While Iceman was a joy at times, he is also limited just like Nightcrawler. Iceman is noted to being one of the most powerful mutants in the comics, while in the game he doesn’t even compare to what comic fans are used to. Iceman isn’t even as powerful as he was in the movies.
Using all three is nice, but, none of them are interesting enough to buy the game alone. Wolverine isn’t as tough or violent as he was in his own game back in 2003, Wolverine’s Revenge. Iceman just flies around the levels with limited action. Nightcrawler has the opportunity to really light up the opposition, but, never reaches that point of skill. Their combos are short and only have about 3-5 attacks depending on who you are using. The game becomes repetitive within the first hour of play time. 
The enemy A.I. is even worse off. They all have the same basic attack which doesn’t add any type of suspense or entertainment when fighting them. Even at the higher difficulties, they tend to be on the easier side of things with just being in the way to your mission objectives. In a few Wolverine missions, I just ran around them since they continually fire their guns without ever reloading. They are a distraction for the real point of the game, and that is to advance the story from X2 to X3. X-Men: The Official Game is a prequel to X3, so it does have somewhat of a purpose.