"You'll love that region," Majin assured, "Though it has a bit of an abnormality."
"Which is?" Shiranui pressed.
"Alola has some similarities to the Orange Archipelago when it comes to the climate and the fact it's an archipelago as well as how their challenges work; but unlike the Orange Islands, Alola has no gyms and fewer islands.  Each major island has a Challenge Trial that involves either a quiz or a scavenger hunt.  At the end of the trial, you'll face a Totem Pokémon that will summon an ally that will put you in a two-against-one battle.  Once you defeat the totem Pokémon, you will be able to face the local kahuna—their equivalent of a gym leader and yes, they have type specialities."