Not counting all of the spinoff or Stadium games:
-Red
-Yellow
-Gold & Silver (simultaneously)
-Crystal
-Ruby & Sapphire (again, same time)
-FireRed & LeafGreen (again)
-Emerald
-Blue
-Diamond & Pearl (again)
Suffice it to say, with the exception of Blue (and Red by just a little), I got every single game right on its release date. This includes all the spin-off games I have (Ranger, Stadium 1 & 2, MD1 & 2, XD & Colo, Pinball, TCG, & more).