let's see
nes:hmmm... I like ninja gaiden yeah it took along time more than 10 yearsbut I did it.
gb:link's awaking: This is perhaps the saddest zelda game the ballad of the wind fish has made me teary at times

Snes: Still megaman X it's tie with CVIV gradiusIII is also up there
Genesis: I do not have alot of games my self but, I have played abit from my cousin and such but, I would say maybe phantasy star II,golden axe, or streets of rage
Turbografx 16: I only have two games, four if I count the two on my wii and my favorite is none other than Y's book Iand II. I'm sure there is a Y's fan or two on the cvd
n64: either super smash bros or zelda majora's mask
ps1:This is very difficult but I do love me some metal gear, and suikoden II is a masterpiece.
Staurn: Darkstalkers is some fun stuff, also space suit leynos IIRC it's a 2d mech game good stuff.
GBC: pokemon yellow or dragon warrior I/II
GBA: Fire emblem is perhaps the most played game for me on that system and perhaps the one game I have passed more than anything.
Dreamcast: Gradnia II Ryudo might be a smartguy but I see where he comes from and his story as well as the rest of the team will get back into it soon. After that would have to be Shenmue It's a very placid game and the reason why I wanted to get a dreamcast for christmas in 12' I like much more than gta or something like that.
GCN:Hmmm Legend of Zelda the wind waker is a big plus in my book.
Ps2 is really hard but, I do love me some onimusha 2.
Psp: mmmm...Peace walker is a good one in fact it was good enough for me to get it signed by the man himself.
Wii:an other hard one I do like other M

skyward sword is ehh to me.
Wiiware: hmm I like megaman 9.
360: Dark souls and tales of vesperia take this one.
Xbox live: I like hard corps uprising all the others I have are ports of other games.Been awhile since I pluged this in.
ps3:As of right now I like tales of graces F
psn: megaman 10