>>34072717Oh I see how you're confused, Crystal, Emerald, Platinum, and USUM are called 3rd versions because their base games are split in two. Stupid I know but that's why, I agree that calling them 2nd versions would make more sense. Gamefreak refers to them as enhanced versions.
>>34072748That's because selling two games sells more than just one, that's why they made BW2 instead of Grey.