The game contains blurbs about the history of development studio, Game Freak around the Pokémon franchise and a tribute to former Nintendo President, Satoru Iwata. When using the Pokémon Bank and transferring a Pokemon from a past game, the NPC will give a short story about different histories. When transferring a Pokémon from Pokémon Silver Version (1999) the blurb will talk about how Satoru Iwata helped the development team squeeze in the Kanto region into the game.
When encountering a Pokémon in the Ultra Wormhole, the chance of it being in its shiny form can be significantly improved. At most, the odds are at 36%, as opposed to 0,002% in the rest of the game.