* Mega Man X3

* Story
- In the year 21XX, all the Mavericks have been neutralized thanks to the efforts of a Reploid scientist named, "Dr. Doppler". Using his Neuro Computer he has been able to suppress any abnormal behavior in the Reploids and prevent them from going berserk. Many of the most advanced Reploids have gathered near their new mentor and founded "Dopple Town", a perfect Utopian community. With Dr. Doppler guiding them, the world seemed ready to enter a new golden age...

- A few months later, the Mavericks who were supposed to have been neutralized by the Neuro Computer suddenly appeared and began to riot... At the Maverick Hunter's headquarters, all the intelligence indicated that Dr. Doppler was the mastermind behind the invasion. Soon, the call went out to X and Zero to destroy the invading Mavericks and to bring Dr. Doppler to justice.

- A few hours later, an emergency contact was made by the Maverick Hunter headquarters. They are under attack from Doppler's force. X and Zero return to base immediately to stop them.

- After defeating the Mavericks in the headquarters, X and Zero fight against Mavericks around Doppler Town. Analyzing the defeated Mavericks, Dr. Cain pinpointed the location of Doppler's hidden laboratory. When X confronted and defeated Doppler, he found out that Doppler was not responsible for the revolt - Sigma was. Doppler had been infected and had built a new powerful body for Sigma, "Kaiser Sigma", but in the end he is defeated by X. However, he turns into a pure viral form, chasing X and cornering him in an attempt to possess his body.

- There are two endings to the game. They both show that Dr. Doppler completed a true anti-virus. One ending shows that Zero picked Doppler's anti-virus and used it with his Z-Saber, dropping down and dealing a fatal blow to Sigma. In the other ending, which occurs if Zero is defeated and is undergoing repairs (that includes obtaining the Z-Saber for X), Dr. Doppler himself comes to the rescue, sacrificing himself to use the anti-virus on Sigma.

* Gameplay
- Mega Man X3 follows its predecessors in terms of gameplay. Players still control X whilst battling Mavericks and managing through obstacles and tough terrain. Once a boss is defeated, X will copy the Special Weapon of the defeated boss. However, this game also debuts the first playable appearance of Zero, a previous NPC who appeared during cutscenes to assist the player. Zero is first playable in the Opening Stage and can be called upon at any time for one life per stage. He possesses a stronger variant of the X-Buster, the Zero Buster, which is capable of four level charges. The fourth level charge fires two fully charged Zero Buster shots followed by a slash from the Z-Saber, the most powerful weapon in the game. He also always starts out with a fully upgraded HP gauge as well. However, Zero is unable to do combat with bosses (with one exception) and automatically leaves and switches places with X again upon nearing the boss door and thus cannot gain new weapons.

- The Armor collecting from the first and second games return, but has further emphasis. In addition to the armor, the player may collect Enhancement Chips which further upgrades the armor parts, giving X a wider range of abilities. However, if the player collects all of the armor parts but none of the enhancement chips, it is possible to unlock a gold palette swap for the armor which provides all of the enhancement powers automatically. Finally, if certain conditions are met, X can obtain the Z-Saber from Zero, but at that point, he can no longer be summoned to help anymore for the rest of the game.