Talk:Pit vs Neptune/@comment-28072188-20170719004231/@comment-25275196-20171227005242

Hyperdimension: The universe where most of the stuff actually takes place in the series.

Ultradimension: The dimension that Nep got pulled into during the 3rd game. This is the one that Plutia, Peashy, and Adult Neptune are from.

Superdimension: The first game is non canon to the other games, so the universe it took place in has been dubbed Superdimension.

Zero Dimension: Fake Universe that just serves as a gateway to Heart Dimension.

Heart Dimension: Manifestation of Uzume's heart as a Universe.

Sharing Field: Pocket Universe.

That should answer all your questions. Sharing Fields are the only pocket universes. Everything else is a full fledged universe. Zero Dimension might not be a real universe, but it still follows the rules for them though.