We know that there are at least 3 universes:
The Mega Evolution universe featured in Gen VI and VII.
The non Mega Evolution universe featured from Ruby and Sapphire through Black 2 and White 2.
The OG Universe featured in the original Generation 1 and 2 games
This is why Pokémon Origins is different from what we played in Fire Red and Leaf Green, because it depicts the events as they occurred in the Mega Evolution universe instead of the non Mega Evolution universe that we played them in, just as Omega Ruby and Alpha Sapphire differ from Ruby and Sapphire.
>>30754343
>3
>multiverse crap
Will you just stop already?
>>30754343
>The Mega Evolution universe featured in Gen VI and VII
XY fit with the previous games, introducing the Mega evolution and Fairy type as something new. Only ORAS fucked everything up with it's trash story.
>>30754397
It's OK anon.
OP obivously doesn't know what a retcon is.
>>30755099
Retcons add in or stated things was a lie. This is a plain old reboot or new universe.
In fact there's infinte universes with similarities. They could as well just remove megas and keep everything in sun and moon and move on.
Every gamefile or media adaption you read is another universe.
Game universe
Anime Universes
PokeSpe Universe
Those are the different universes.
>>30754343
This fucking multiverse shit still
>>30757204
Parallel universes are only slightly hinted at in the game's lore, but they were never fully confirmed (unless you're talking about the Ultra Space / Distortion World, but there's a difference between an alternate dimension and a different universe). If you read the game's dialogue, it really doesn't confirm shit, as it could just be the game referencing itself - something that happens quite a lot in other games too.
Now stop mixing canon with fanon already.