Metal Gear Solid. I wish the legacy collection was on Xbox.

MW2 superior over CoD4? Good god, MW2 is my most hated game...

Castlevania- Haven't played Bloodlines, the PS2-games or Lords of Shadow 2
Mega Man-.Haven't played any of the games not available on Nintendo-plattforms
Resident Evil- Haven't played 6
Infamous- Haven't played Second Son(This one hurts)

Gears of war.

I don't really understand the hate for MW2. Sure, it's not the most innovative game, and it's not going to be on very many people's top 50 lists, but just because it was popular doesn't mean it was bad.

It did have a fair bit more content than CoD4 did.

Grandia - haven't played Grandia 3 or the unlocalized Gameboy game
Ogre Battle - the NeoGeo Pocket Color game.
Yakuza - Black Panther Yakuza 1 and 2, and Yakuza 5
Phantasy Star Online - I haven't played Episode 4, Zero, or Online 2
Wild ARMs - I own but haven't played Wild ARMs 5

Final Fantasy. I haven't played IX, X, X-2. XI, XII, whatever came after XIII and the spin-off minus the GC game and Echoes of Time.

Mass Effect. I still haven't played the third, despite owning it.

Dead Rising 3. I still haven't played the third, despite owning it.

Way of the Samurai. I only own the third game xD

Well, my one and only problem with MW2 was and is the absolute shit balance that game had, with no effort from Infinity Ward to fix it. Most people were Danger Close noobtubing, but IW never nerfed that shit, so more and more people started to do it until 95% of the community did.

MGS.