>>48535618Just for note, I'm considering 2nd versions like USUM and BW2 as a singular game since it makes more sense that way.
First, I want to issue a correction. Pokemon Crystal sold the absolute worst, but it's also the earliest 3rd version I have sales numbers for:1,550,698 copies. I can't tell if this is worldwide or just in Japan though, especially since the sales went deep into 2006.
Emerald still sold 6.32 million copies world wide, which still makes it worse selling than Platinum, but by this point it was also competing with remakes, where as Platinum had about 6 months alone.
Platinum sold 7.06 million copies world wide by 2010.
Black and White 2 sold 7.81 million copies worldwide by the time it was out of circulation, which is no small feat.
Ultra Sun and Ultra Moon had 8.98 million copies overall, which is still really impressive for any game.
For the other part, Diamond and Pearl sold 17.67 million units worldwide by the time it was out of circulation. Pokemon Black and White sold a mere 15.64 million copies, which while still a lot, makes it the worst selling mainline series of the post Gameboy Pokemon games. Even Ruby/Sapphire outsold it at 16.22 million copies(a 58,000~ difference!)