ソードアート・オンライン インテグラル・ファクター

Enter the world of Sword Art Online with the official MMORPG experience that lets you explore Aincrad alongside Kirito, Asuna, and iconic SAO characters. Sword Art Online Integral Factor is a full-dive virtual reality MMO where you become a trapped player in Kayaba's deadly death game—and clearing the 100 floors is your only way home.

Immerse yourself in an original "IF story" that expands beyond the anime narrative. You'll uncover behind-the-scenes encounters and alternate plot developments that could have happened in Aincrad, all experienced from your unique perspective as a player. Alongside your original character Koharu and the SAO cast, you'll face the mystery and danger of the floating castle in ways the original story never showed.

Team up with players across the country to conquer Aincrad's toughest challenges. Form a party to tackle brutal boss fights and difficult quests that demand cooperation and strategy. Join a guild to share intel, build friendships, and coordinate your approach to the game's most dangerous encounters. Every player's decisions matter—together, you'll overcome obstacles that would be impossible to face alone.

Master an engaging battle system built around weapons, skills, and tactical preparation. Collect and craft powerful gear, equip skill records with unique effects, and study your enemies' attack patterns to gain the upper hand. Success depends on understanding your opponent's weaknesses and combining the right weapons and abilities for each fight. As you progress through higher floors, customize your SAO companions by adjusting their friendship levels, equipment, and skill setups to match your playstyle.

Experience true MMORPG gameplay where your avatar is entirely your own. Control your character's movements and actions in real-time combat, manage your inventory, and develop long-term strategies for survival. The deeper you venture into Aincrad, the more complex and demanding the battles become—but with proper preparation and teamwork, victory is within reach.

Sword Art Online Integral Factor combines the beloved characters and world-building of the franchise with the freedom and social depth of a genuine multiplayer online experience. Will you survive the death game?