Hyperdimension Neptunia is an RPG game series developed by Idea Factory and distributed by Sega, Idea Factory, and Tecmo Koei. The series follows the events that transpire in a world known as Gamindustri, an amalgamation of four ruling nations, Planeptune, Lastation, Leanbox, and Lowee, each ruled by a Console Patron Unit.

Hyperdimension Neptunia is a video game series of role-playing games created and developed by Idea Factory. The series debuted in Japan on August 19, 2010 with the video game of the same name exclusively for the PlayStation 3, later re-released as an enhanced remake under the name Hyperdimension Neptunia Re;Birth 1 for the PlayStation Vita. Two sequels, Hyperdimension Neptunia Mk2 and Hyperdimension Neptunia Victory, in addition to the remake titles for both of them and three spin-offs on the PlayStation Vita, have also been released. Another sequel on the PlayStation 4, titled Megadimension Neptunia VII, was released in 2015. It has also branched off into a manga, light novel and anime media franchise series.