Neptunia: Sisters vs. Sisters - Calendar Edition

About

Neptunia: Sisters vs. Sisters - Calendar Edition is a role-playing game centered on a team of computer-based characters battling to restore balance to their digital world. You guide Nepgear and allies through turn-based combat and narrative-driven quests set in a future where smartphones have overtaken traditional systems. The story follows Nepgear after she’s revived from a forced two-year slumber to a world where her sister Neptune is missing and their home has fallen. Gameplay mixes strategic battles with dialogue choices that shape relationships, all wrapped in the series’ brand of sci-fi humor and mechanical lore. The Calendar Edition bundles the game with physical extras like a desktop calendar, reversible cover, and a double-sided poster, appealing to collectors. Its focus on CPU vs. smartphone rivalries and character dynamics continues the long-running franchise’s themes of adaptation and loyalty. Available on PlayStation 4 and 5, it’s a single-player package that leans into its niche audience with minimal hand-holding for newcomers.

Storyline

Handhelds vs. smartphones—the little sisters’ portable revolution that began over time… That day, the four CPUs set off in response to a request for help from the PC Continent far beyond the sea, while Nepgear and the other CPU candidates that stayed behind visited a certain research facility. There, they were trapped in a capsule and put into a deep sleep by the "Gray CPU,” and awakened to a Gamindustri two years later. People now had the latest model of smartphone, called the “MagiPhone.” It became a world in which the market share was dominated by smartphones. Nepgear is told that Planeptune fell to the "Buzzoer Phenomenon," in which hordes of monsters to appear, and that her older sister Neptune went missing. Having lost her sister and a home to return to, Nepgear fell into despair. This is a story of destruction and restoration, by CPUs, for CPUs, to pave the way from a future of despair, to a future of hope.