你扮演主角桐人，在妖精与魔法的世界 Alfheim Online 中自由飞越天空，与同伴一起征服浮空之地 Svart Alfheim。战斗分为空中与地面，节奏很快，技能搭配和成长方向由你自己决定。和朋友联机合作打强敌，也能在线对战，边打边配合，越成长战斗越带劲。
Sword Art Online: Lost Song 让你进入动画 SWORD ART ONLINE 的 VRMMO 世界。在妖精与魔法的国度 Alfheim Online 中，你扮演系列主角 Kirito，与伙伴一起攻略漂浮的大地 Svart Alfheim。故事是全新原创剧情，除了动画中的常驻角色，Seven、Rain 和 Sumeragi 这三位来自「Lost Song」的角色也会加入。
战斗分为空中和地面两部分，节奏很快，动作衔接连贯，可以自由地在天空中翱翔，迎战挡在面前的强大敌人。技能由你自己挑选，成长方向也由你决定，随着角色变强，战斗规模会越来越大。游戏带有开放世界与 JRPG 的探索要素，可以按自己的节奏推进。
Steam 功能包含在线合作与在线 PvP，你可以和朋友联机组队，一起攻略 Svart Alfheim，也可以在对战中较量。角色自定义是标签之一，开玩前可以先捏好自己的外观。多人内容需要联网，单人剧情部分则可以自己完成。
Take on the role of Kirito, the hero of the popular Sword Art Online anime series, and explore a fantasy world alongside attractive companions! Take down tough enemies in strategic battles and communicate with your companions in real time!
Enjoy seamless, action-packed real-time battles using a combination of sword skills, sacred arts, and your favorite SAO characters!
Introducing the 2nd installment for the 10th anniversary of SWORD ART ONLINE! A total of 21 characters from the series join the battle beyond memory—a challenge taken on solo or with friends. Go beyond memory... and Switch!
Create the character you really want, and explore the alchemy world with the help of "YOME"!
A grand adventure in the skies awaits! Form a party of four from a diverse roster of skyfarers and slash—or shoot or hex—your way to victory against treacherous foes in this action RPG. Take on quests solo or with the help of others in up to 4-player co-op play!
The MMORPG of a massive and magnificent fantasy! Let's explore the MMO world!