MGS4 will have sold 4.5 million copies by the end of the year.

[DMeisterJ]

I think it'll definitely pass MGS3 in sales, which would be fine, but the game is already a success.

Passing MGS1 or MGS2 would be a feat, but that won't happen.

But 4.5 mil lifetime, plus the sales from MGS4: Subsisisisisisisisistence could put it to 5 mil.