Damn, this will be hard...
NES - Contra, Castlevania
SNES - Super Metroid, Super Punch-Out
Genesis - Castlevania Bloodlines, Road Rash 3
N64 - Ocarina of Time, Castlevania (yeah I know, I'm stupid)
PS1 - Symphony of the Night, Metal Gear Solid
PS2 - Metal Gear Solid 3, Final Fantasy XII
Gamecube - Wind Waker, Resident Evil
360 - Bioshock, Rainbow Six Vegas
Gameboy - Both of the Zelda Oracle games
GBA - CotM, Double Dragon Advance
DS - Portrait of Ruin, Contra 4
Arcade (not sure if arcade counts) - Double Dragon, Battletoads
...wow, that list actually surprises me a little bit. I kind of hate trying to choose favorites, though.