The event was so strange, they should have advertised it better in the plaza, I found out about it just because I registered on the Global Link to see how some of my friends ranked online, I must count for about 400 of those Pokémon since I've been breeding the heck out of anything remotely competitive since the game released, seriously, I already have a Shiny Vulpix from breeding...

They needed something like the holovisor from X/Y, or however it was called. People would have seen it more.

The more I play Sun/Moon, the more I miss X/Y.

They probably did, but didn't register.

10 pokemon per user, 10 million unit sold(or shipped, but almost all sold).
Seems very possible.

If the game was awlays online, it would probably reach. But better not

I've caught about 200ish...didn't even know this existed

Oh well 

I'm sure that 99% of Pokemon gamers haven't bothered to register. Which was pretty much a given. I thought it was totally unrealistic when I saw that number lol.

I was too lazy to register

This... I just went through the game normally and caught 80-ish Pokemon, if I had known I would've caught more

Lol, I never bother updating (+3 pokemon :p ) so I'm sure a lot of pokemon weren't included since other people didn't as well

I've played the shit out of that game (have 299/301 Pokémon, lacking only the moon ultrabeast exclusives) and never registered. I doubt most players are even aware of it, and I certainly wasn't aware of some global event. Festival Plaza is still weird, confusing, and poorly implemented.