This is the currency used in the Hyperdimension game series. Credits are used to purchase items in the shop. In Hyperdimension Neptunia Victory, credits can also be used to send scouts out. In Megadimension Neptunia VII, credits gains even more uses as it can be used for road building and investing in cities. If the game has a Nepstation segment, credits can also be used in Walletcrusher Nep. From Hyperdimension Neptunia Victory onward, the main series and remakes have achievements related to collecting a large amount of credits.
Credits can be obtained from defeating monsters, harvest points, quests, colosseum battles, getting all the questions right from Millionep, or selling items.