So lets say you have played Metal Gear solid 3,but don't have Ps3 and have now missed Metal Gear Solid 4.

I have missed Gears 2 now,but gonna play it with my friends.

Tales of Vesperia.

Not really a sequal but I still wanted it....

Legen Of Zelda Twilight Princess aswell.

Star Ocean 4 (assuming everything stays as it is now)

Metal Gear Solid 4.

Letting my brother hold onto the 360 when I left home has left me bereft of many, many games.

To Dgc1808:

You do know LoZ:TP is also on Gamecube, right?
If you don't have a GC then I guess you missed Windwaker as well. Not to mention a lot of other great games.

I was missing Ace Combat 6.... but then I got an Xbox! That game was awesome...

Resident Evil, played (0, Remake, 1, 2, 3, 4, Code Veronica) On GC, Wii and PSone but i will miss out on Resident Evil 5 if there is no PC version.

Jet Set Radio Future

This, more than any other game mentioned here, is a shame.

Oddworld: Munch's Oddysee and Oddworld Stranger's Wrath