Mega Man Xtreme happened in 2000.
Mega Man X Collection happened in 2006.
Mega Man - video game - happened in 1987.
Mega Man ZX Advent happened in 2007.
Mega Man Star Force happened in 2006.
Mega Man Network Transmission happened in 2003.
Mega Man Anniversary Collection happened in 2004.
Mega Man III - Game Boy - happened in 1992.
Mega Man IV - Game Boy - happened in 1993.
Mega Man Zero - video game - happened in 2002.
Mega Man V - Game Boy - happened in 1994.
Mega Man Battle Chip Challenge happened in 2003.