Yonmegami Online: Cyber Dimension Neptune

Stock up on your Nepbull, because Vert’s inviting you on a dungeon raid! In this hack ‘n’ slash adventure everyone’s favorite four Goddesses enter an online fantasy game world inspired by…themselves! Joined by the CPU Candidates, you’ll fight in 4-person real-time brawls, unleash devastating Awakening Skills, customize with tons of cosmetic accessories, and even play online with others!

Long ago when the world was nothing but a void, the goddesses created Leanverde, the World Tree. The mighty Earth and the majestic oceans were born on the foundation of its sprouts, and the goddesses bestowed upon this world the name of Alsgard. At least, that’s what the “4 Goddesses Online” MMO is about. Now the real Gamindustri goddesses must log in and hack ‘n’ slash through this game-within-a-game to get to the final boss. What could possibly go wrong?

Source: TheGamesDB