Mega Man games ordered according to release
I've only included the traditional Mega Man games in this list. The dats may be off a bit, I was more interested in the year.
Mega Man - NES - 12/16/87
Mega Man 2 - NES - 12/23/88
Mega Man 3 - NES - 09/27/90
Mega Man 4 - NES - 12/05/91
Mega Man 5 - NES - 12/03/92
Mega Man 6 - NES - 10/05/93
Mega Man X - SNES - 12/16/93
Mega Man X2 - SNES - 12/15/94
Mega Man 7 - SNES - 03/23/95
Mega Man X3 - SNES - 11/30/95
Mega Man 8 - PS - 12/17/96
Mega Man X4 - PS - 07/31/97
Mega Man X5 - PS - 11/30/00
Mega Man X6 - PS - 11/29/01
Mega Man and Bass - GBA - 08/10/02
Mega Man X7 - PS2 - 07/17/03
Mega Man 2 - NES - 12/23/88
Mega Man 3 - NES - 09/27/90
Mega Man 4 - NES - 12/05/91
Mega Man 5 - NES - 12/03/92
Mega Man 6 - NES - 10/05/93
Mega Man X - SNES - 12/16/93
Mega Man X2 - SNES - 12/15/94
Mega Man 7 - SNES - 03/23/95
Mega Man X3 - SNES - 11/30/95
Mega Man 8 - PS - 12/17/96
Mega Man X4 - PS - 07/31/97
Mega Man X5 - PS - 11/30/00
Mega Man X6 - PS - 11/29/01
Mega Man and Bass - GBA - 08/10/02
Mega Man X7 - PS2 - 07/17/03