Worldwide?

Gran Turismo 5

or

Halo Reach

Gran Turismo 5 absoeffingeasily!

I'm gonna say GT5 because it's the first iteration and many customers are waiting while Halo is kind of old hat this gen. They'll both be massive, but yeah.

Was gonna say GT5, but now I'll go with Halo: Reach.

GT5, BTW Steve Fox is a fking sick name

grand turismo 5 san

You aint on the cool side anymore, I hope all your ice creams melt!

39% of those who intend to buy GT5 do not yet own a PS3.

Let's say GT5 sells what the usual iteration sells (10mil) - that's 4 million consoles going to be shifted by the title...

GT5

This far into the consoles generation, there are very few games that are really system sellers anymore! Between the two I would say Grand Turismo 5 since any Halo fans probably would have already gotten an Xbox for one of the other Halo games on the system!!