Unique Skills (ユニークスキル, Yunīku Sukiru?) are «[[w:c:swordartonline:Extra Skills|]]» in «[[w:c:swordartonline:Sword Art Online|]]» that is assigned to only a single player per skill. Like other Extra Skills, the prerequisites for receiving «Unique Skills» are unknown, but they are said to be given to players who fulfill a certain physical requirement.
In «Spell Blade Online», unique skills had set prerequisites that were provided within the skill tree interface by clicking on the icon and opening the unique skill's skill tree to view unlock requirements. On top of the ones from SAO, new unique skills were added into SBO. However, unlike SAO unique skills, unique skills in SBO can and could be used by more than one person at once although the cap is set to three users of the same unique skill.
List of Known Unique Skills
|English Name||Japanese Name||Acquisition||User(s)||VR||References|
|Assassin's Blade||刺客剣, Shikakuken||Unlocked by completing the «One-Handed Short Sword» skill, also known as «One-Handed Dagger».||Silica (Both)||SAO|
|Battōjutsu||抜刀術||Unlocked by completing the «Katana» skill.||Klein (Both)||SAO|
|Darkness Blade||暗黒剣, Ankoku Ken||Unlocked by killing the most other players.||PoH||SAO|||
|Dual Blades (SAO)|
Celestial Blades (SBO)
|Given to the player with the fastest reaction speed. (SAO)|
Spoiler Alert! [show](SBO)
Unlocked by attaining 500 proficiency with «One-Handed Sword» and successfully landing 2000 hits utilizing one-handed sword skills on mobs.
|[[w:c:swordartonline:Holy Sword|]] (SAO)|
Sacred Cross (SBO)
|Given to the strongest player.||[[w:c:swordartonline:Heathcliff|]] (SAO)|
|Infinite Spear (SAO)|
Thorn of Illusions (SBO)
|無限槍, Mugen Yari|
|Unlocked by completing the «Two-Handed Assault Spear» skill. (SAO)|
Spoiler Alert! [show](SBO)
Unlocked by successfully inflicting 250 debuffs and attaining 500 proficiency with «Two-Handed Assault Spear».
|Niten Ichi-ryū||二天一流||Unlocked by completing the «Battōjutsu» unique skill.||Klein||SAO|
|Shurikenjutsu||手裏剣術||Unlocked by completing the «Blade Throwing» skill.||Philia (Both)||SAO|
|Soaring Slash||飛翔切り, Hishōgiri||Unlocked by connecting skills to one another 3200 times.||Klein||SAO|
|Songstress||歌姫, Utahime||Unlocked by completing the «Chant» Extra Skill.||Kirin (Both)||SAO|
- Akihiko Kayaba has stated that there are only ten «Unique Skills» in total, in contrast to the "unlimited" number of other skills.
- ↑ 1.0 1.1 1.2 Volume 1, Heroine's Elegy Chapter 5, Part 2
- ↑ 2.0 2.1 Aincrad Darkening Chapter 3, Part 2
- ↑ 3.0 3.1 3.2 Skill is refurbished and renamed in «Spell Blade Online» as shown in Spell Blade Beginning Chapter 2, Part 1.
- ↑ 4.0 4.1 Volume 1, An Inkling of Evil Chapter 2, Part 2
- ↑ Volume 1, An Inkling of Evil Chapter 1, Part 3
- ↑ 6.0 6.1 Volume 1, An Inkling of Evil Chapter 1, Part 1