Welcome to the Megaman Game DataBase. I bet you won't expect to find 38 different Megaman titles ( Some of the Megamans' for Gameboy are different from the one for NES ).

NES

Mega Man 1 (NES-1987)
Mega Man 2 (NES-1989)
Mega Man 3 (NES-1990)
Mega Man 4 (NES-1991)
Mega Man 5 (NES-1992)
Rockboard (Famicom-1992)
Mega Man 6 (NES-1993)

SNES

Mega Man 7 (SNES - 1995)
Mega Man X (SNES-1993)
MM Soccer (SNES-1994)
Mega Man X2 (SNES-1994)
Mega Man X3 (SNES-1995)
Rockman & Forte (Super Famicom-1998)

GB, GBC, & GBA

Mega Man I (1990)
Mega Man II (1991)
Mega Man III (1992)
Mega Man IV (1993)
Mega Man V (1994)
Mega Man: Dr. Wily's Revenge (1998)
Mega Man Xtreme (GBC-2000)
Mega Man EXE (GBA-2001)

PSX

Mega Man 8 (PSX - 1997)
Mega Man X4 (PSX-1997)
MM Legends (PSX-1997)
Rockman Battle & Chase (PSX-1996)
Superadventure Rockman (PSX-1998)
Rockman Collector Series 1-6 (PSX-1999/2000)
Mega Man Legends 2 (PSX-2000)
Mega Man X5 (PSX-2001)

ARCADE, NEOGEO POCKETCOLOR, DC, ETC.

Wily Wars (MegaDrive-1994)
Mega Man (Game Gear-1995)
Power Battle (Arcade-1995)
Power Fighters (Arcade-1996)
Mega Man 64 (N64-2001)
Marvel VS Capcom (DC-1999)
Marvel VS Capcom 2 (DC-2000)
Cannon Spike (DC-2001)
Rockman Battle & Fighters (NeoGeo Pocket-2000)

For all the adults(or kids) out there, here are the abbreviations listed in full form:

NES=Nintendo Entertainment System
SNES=Super Nintendo Entertainment System
GB=Gameboy
GBC=Gameboy Color
GBA=Gameboy Advance
PSX=Playstation
PSX2=Playstation 2 (none created yet)
DC=Dreamcast
N64=Nintendo 64
MXBOX=Microsoft X-Box (none created yet)
GC=Gamecube (none created yet)
WS=Wonderswan (none created yet)