Just curious, at this point and time, what games that are left to come out would have a greater impact on console sales than the total library for a game system?  Outside of someone being a fan of a given title in a series that hasn't hit yet fully (say Gran Turismo) exactly what other games are left this generation that will have a larger impact on sales of a given system than the entire library of a given system or its rival?

Anyone have any idea?  I have seen God of War III being made out, for example, as a big system mover.  However, God of War I and II are now available on the PS3.  And while the demo looks promising, why would God of War III end up having a greater impact on sales than everything else available for the PS3?  Same goes with Halo Breach on the 360, or whatever else that hasn't hit for the Wii.

Zelda Wii might have that kind of impact, though I suspect most of the Nintendo fans already have a Wii by now, so it might not see that kind of impact.

Gran Turismo, because it's Gran Turismo.

And I doubt Halo Reach will prove to be much of a system seller, if any, but we might have a hard time telling if it releases the same time as Natal, Gears of War 3, etc.

Can't think of any other at the moment, though both Natal and the Wands could prove to have an effect like this.

I think Gran Turismo 5 is the only one left that will have a major impact. Halo: Reach and God of War III will cause a small bump like Uncharted 2 did, but nothing to significant.