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A Duel between two players.

Duels (デュエル, Dyueru?) are authorized Player versus Player (PvP) fights that can take place even in safe areas and will not change a player cursor from green to orange by killing the opponent. Known games that have duels are Sword Art Online and ALfheim Online.


To make a duel a player must send a request to another player. The latter must accept the request, and is then given the right to decide the type of the duel. At the beginning of the duel, the player will have sixty seconds to prepare for the duel. Once the duel begins, the Area effect is lifted from the two duelists.

If the victory condition for the duel is not met within the time limit, the victor is chosen based on who had more Hit Points (HP) remaining at the end of the duel; however, the Hit Points are rounded in increments of five, thus minor differences in Hit Points will result in a draw.[1] After a duel is concluded, a window indicating the winner will appear between the participants for thirty seconds[2] if they are within ten meters of each other. If the participants are farther apart at the end of a duel, then two windows will appear at the closest point to both the winner and loser separately.[3]

Types of Duels[]

In Sword Art Online and ALfheim Online, three types of duels exist:[4]

  • Total Loss Mode (全損決着モード, Zenson Kecchaku Mōdo?)[4]: Rarely used in Sword Art Online, since it will only stop when a player's Hit Points reach zero, which results in permanent death for the loser. This type of duel can be used for Sleep PK.
  • Half Loss Mode (半減決着モード, Hangen Kecchaku Mōdo?)[4]: The winner is decided after the other player loses half of their hit points. Rarely used in Sword Art Online, as a critical hit could reduce someone's Hit Points to the danger zone.
  • First Strike Mode (初撃決着モード, Shogeki Kecchaku Mōdo?)[4]: The most common type of duel in Sword Art Online. The winner is decided by whoever lands the first clean hit that deals at least ten percent damage[5] or whittles the opponent's HP to half.

Known Duels[]

Participants Date Outcome Notes References
Kirito versus Morte December 19, 2022 Draw Challenger - Morte
Duel Type - Half Loss
Asuna versus Kirito December 28, 2022 Draw Challenger - Asuna
Duel Type - First Strike
Duel halted before the fight could begin.
Asuna versus Kirito March 6, 2024[7] Kirito wins Challenger - Asuna
Duel Type - First Strike
Mosaku versus Tonnura Mosaku wins [7]
Kirito versus Kuradeel October 18, 2024[9] Kirito wins Challenger - Kuradeel
Duel Type - First Strike
Heathcliff versus Kirito October 20, 2024[11] Heathcliff wins Challenger - Heathcliff
Duel Type - First Strike
Taikoku versus Kirito October 27, 2024[13] Kirito wins Challenger - Taikoku
Duel Type - First Strike
Lisbeth versus Yuuki Yuuki wins [14]
Leafa versus Yuuki Yuuki wins [14]
Kirito versus Yuuki Yuuki wins [14]
Asuna versus Yuuki January 7, 2026 Yuuki wins Challenger - Yuuki
Duel Type - Total Loss
Kirito versus Yuuki February, 2026 Yuuki wins Part of the ALO Duel Tournament [15]


  • In the web version of SAO, duels could also be conducted without consent by the other party in the fighting arena in the Starting City during the beta test of SAO.



Duels, Quests and Events Navigation Bar
SAO Angel's Ring - Christmas Event - Cows' Counter Attack - Dark Elf Queen's quest - Elf War Campaign quest - Frost dragon quest - Guild Formation quest - Karma Recovery quest - Martial Arts quest - Meditation Extra Skill quest - Ogre Slaughter quest - Secret Medicine of the Forest - Witch of the West and the Three Treasures
ALO Angel's Ring - Beast God Slaughter quest‎ - Deep Sea Plunderers - Guardians of the World Tree - The Holy Sword of the Ice Palace - Ragnarök Event - Sisters on the Summer Beach
GGO Bullet of Bullets - Squad Jam - Untouchable!
Alicization Four Empires Unity Tournament - Norlangarth North Area Swordsmanship Competition - Norlangarth North Empire Swordsmanship Tournament