Alfheim Online

Location from Sword Art Online by Reki Kawahara

A fairy flight VRMMO built on SAO's engine — where nine fairy races war over territory and the World Tree's crown hides a prison disguised as a quest reward.

Also known as: ALO, Alfheim, Alfheim Online

What They Know

• Nine fairy races with distinct abilities: Sylphs (wind), Undines (water), Spriggans (illusion), Salamanders (fire), Cait Sith (beast taming), etc.
• Flight mechanics: wing-based flight with stamina limits, altitude ceilings, and skill-based aerial combat
• The World Tree quest — originally rigged by Sugou to be impossible, now a legitimate endgame challenge
• Built on the same Cardinal System engine as SAO — meaning Yui can access its backend

Connections

• home_of — leafa
• home_of — yuuki
• contains — world_tree
• home_of — sakuya
• enabled_by — seed

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