>>55878204>has all the pokemon>has megas and Z moves>you can turn the exp share off, which combines with the better statted bosses makes it have a decent challenge >great story and characters>lots of events and sidequests, makes the pretty small region seem bigger and more full of life than just about every other region>great postgame and minigames >removed the grid that plagued XY and ORAS>fixes the issues original S&M hadTo me at least, USUM is as good as pokemon gets.
Still should have only been one version instead of two, the reverse world already exists to change time of day.