Soul, passion and the story of life.

The end of Underworld, virtual reality created to spur the development of the ultimate AI known as A.L.I.C.E.

In the Underworld War, the Human Realm faces the Territory of Darkness in a struggle for life.
Amidst the chaos, a mysterious Dark Knight appears with a girl, from the Dark Territory.

Will she be the key to a better future, or will she seal everyone's tragic fate?

In this action RPG, players step into the shoes of Kirito, the protagonist of the SWORD ART ONLINE anime, on an adventure with his friends to save the virtual world Underworld, whose end is imminent.

This is the climax of the SAO game series, featuring fast-paced battles, MMO-style multiplayer, over 40 playable characters, and the most different endings.

If Kirito were here...
If Eugeo were alive...
In this virtual world so close to the end, experience an unprecedented life story.