Eurasia

Eurasia (ユーラシア) is a space colony that played a very important role in Mega Man X5, and is also referred in Mega Man X6 and Mega Man Zero 4.

In Mega Man X5, Sigma ordered Dynamo to spread a virus in the colony and make it crash on Earth, and the Maverick Hunters have 16 hours to destroy the colony before it crashes, using the time to obtain parts to enhance the power of the only weapon available, an old cannon called Enigma. Depending of the game events, the colony can be destroyed before entering Earth, either with the Enigma or the space shuttle piloted by Zero, or crash and cause large destruction, in both ways making the virus inside the colony merge with the Sigma Virus, and Zero may become a Maverick.

In Mega Man X6, it's shown the colony had fallen and Earth suffered large damage and many lives where lost. Gate explored the remains of the colony in its crash site and found of a fragment of Zero, and one week later he became a Maverick as the was infected by the virus in the debris. Eurasia's remains can be seen in from distance in the first stage and in the entrance of Gate's Lab. In Mega Man Zero 4, it's revealed Area Zero is the local where Eurasia had crashed. The area has been sealed off since the crash of the space colony, but the land has been renewed and nature is becoming more abundant.

Trivia

 * The name Eurasia comes from the large landmass that comprises the continents Europa and Asia, and is a portmanteau of the two.