ALfheim Online

«ALfheim Online» (アルヴヘイム・オンライン),usually abbreviated as "ALO", is the VRMMORPG successor to «Sword Art Online». It is compatible with any version of the FullDive technology. The game features nine races of fairies, whose goal is to reach the top of the giant tree Yggdrasil, in order to meet the Fairy King Oberon. It was said that Oberon would turn the first starting race to reach the top of the World Tree into the legendary race of ALFs, with the ability to fly for unlimited time, but this later proved to be a lie. After ALO is acquired by Ymir, after the events of the Fairy Dance arc, unlimited flight is now granted to all fairy races (though it is still impossible to fly in dungeons).

It is the setting for the Fairy Dance Arc of the series, which was covered in the Light Novel Volume 3, Volume 4. It is also the setting for Volume 7 (Mother's Rosario) and Volume 8 Part 2 (and its alternate ending, Caliber SS). Instead of the level system that Sword Art Online emphasized, ALfheim Online pursues skill development and encourages killing other players. This kind of system tries to eliminate the enormous gap that exists on a level-based games between new and old players.

Background
After Argus went bankrupt due to the SAO incident, its servers and data were acquired by RECTO Progress Inc. and used to create the VRMMORPG ALfheim Online. ALfheim or ALO is loosely based on both fairy lore and Norse mythology, drawing elements from other legends as well for its setting.

System
The system makes the player choose one of nine races of fairies for their avatar, each one with different abilities and affinities toward magic. Unlike Sword Art Online's system, the player apparently will have their game avatar set up randomly, the player just needs to input their Avatar name and select the race of the character, however, for an extra fee, players can reconstruct their characters to their liking. The gender of the Avatar will be the same as the player in real life by default, and the player cannot change it no matter what.

The game is famous for being the first game to allow the player to fly for real. It uses a flight engine to enable the player to fly.

The skills are developed by the player's own abilities and by repeating them over and over, so a player with low level but good skills can match a veteran player almost evenly in battle.

The flight system also focuses on the player's own ability. It has a "controlled flight" mode, in which the players make use of a controller to fly, at the cost of being able to use only one hand to fight, but, with enough experience and ability, the player is able to learn «Voluntary Flight» and, with it, can use both hands while flying and gains more maneuverability and speed.

Virtual Reality Experience
As ALO is based on the core programming of SAO as a complete virtual reality MMORPG, the ALO system is capable of rendering the entire ALfheim environment with incredible realism, extremely similarly to the level of SAO. By stimulating nerves in the brain, it is possible to taste food, feel the wind and weather, move one's body, and live in ALO as if it were an alternate reality. However, there are several major differences that set the ALO environment apart from the real-world experience.

First, no pain is actually felt in any situation due to a feature called «Pain Absorption». As a result, gamers can undergo severe injuries and still only feel a tingling sensation. Though certain stimulation, such as magical explosions, can result in negative feedback, like headaches and dizziness that last for several hours. Second, there is no blood; in its place are orange virtual gashes that are seen in the place of damage. Third, magic is implemented to produce a variety of effects, with the incantations being based on strings of words.

While playing ALfheim Online, gamers still feel fatigue and hunger (even if their real bodies are not hungry), yet they can also eat in-game to dispel hunger in the real world, which has developed into a form of dieting for some people as a result.

Death or deletion in the game is visualized by fragmentation into thousands of polygon shards. All monsters and items go through such a process. However, players go through a different death scenario: they are engulfed in flames and then leave a [[Remain Light] which lingers for a set amount of time, during which the player can still observe his or her surroundings and be revived with magic or special items.

Environment
According to Yui, the environmental data is much like SAO in its code, but the only primary differences are the overlay of changing appearances of creatures, character data, and  altered programming of AI's as navis (navigation pixies).

Initiation and Character Creation
Upon opening signing in to ALO, a player must first select a race, each of which has special attributes and skills unique to their race. After the race is selected they will be spawned in the race's hometown.

Races

 * Cait Sith (ケットシー): Skilled beast tamers with improved eyesight. They are recognizable through their cat ears and tails.
 * Gnome (ノーム): Largest fairy race and users of the earth. They are styled in brown.
 * Imp (インプ): Masters of night, great night vision. They are styled in purple.
 * Leprechaun (レプラコーン): Blacksmith race, their wings have a mechanical appearance.
 * Puca (プーカ): Users of music which is used to confuse, attack, or support.
 * Salamander (サラマンダー): Considered the strongest race in terms of attack, they have superior fire spells and are styled in red.
 * Spriggan (スプリガン): Masters of illusion and treasure seeking. They are styled in black.
 * Sylph (シルフ): Considered the fastest race and users of wind, they are denoted by the color green regularly.
 * Undine (ウンディーネ): Healers and masters of water. They are styled in blue.
 * Navigation Pixie (ナビゲーション・ピクシー): Although not a choice of race, users with a high level can obtain a navigation pixie to lead them from place to place.
 * ALFs: The rumored legendary race with unlimited flight. It is believed that the first of the available starting races in ALfheim Online to reach the top of the World Tree and gain an audience with Fairy King Oberon would be elevated to ALFs and granted the joys of unlimited height and no time limit of flying. Many players are disappointed to find out that this race doesn't exist at all.

Creator Publications

 * Sword Art Online Episode 15
 * Sword Art Online Episode 16
 * Sword Art Online Episode 17
 * Sword Art Online Episode 18
 * Sword Art Online Episode 19
 * Sword Art Online Episode 20
 * Sword Art Online Episode 21
 * Sword Art Online Episode 22
 * Sword Art Online Episode 23
 * Sword Art Online Episode 24
 * Sword Art Online Episode 25
 * Sword Art Online Light Novel Volume 03
 * Sword Art Online Light Novel Volume 04
 * Sword Art Online Material Edition 05

Characters

 * Agil
 * Alicia Rue
 * Asuna
 * Eugene
 * G-Takusu
 * Kagemune
 * Kayaba Akihiko
 * Kirigaya Midori
 * Kirito
 * Leafa
 * Recon
 * Sakuya
 * Sigurd
 * Sugou Nobuyuki
 * Yui
 * Yuuki Shouzou

Races

 * Cait Sith
 * Gnome
 * Imp
 * Leprechaun
 * Puca
 * Salamander
 * Sylph
 * Spriggan
 * Undine

NPCs

 * Tonkii

Locations

 * Aarun
 * Dungeon
 * Floating City
 * Jötunheimr
 * Sylvain
 * World Tree

Technology

 * AmuSphere
 * Cardinal System
 * FullDive
 * NerveGear

Terminology

 * Artificial Intelligence
 * Color Cursor
 * Duels
 * Dungeon
 * Evil Gods
 * Magic
 * Navigation Pixie
 * Player Killing
 * Potions
 * Quest
 * Races of ALfheim Online
 * Remain Lights
 * Skills
 * VRMMO
 * Yurudo

Items

 * Potions
 * Sap of the World Tree

Equipment

 * Black Iron Great Sword
 * Demonic Sword Gram
 * Holy Sword Excaliber

Miscellaneous

 * RECTO Progress Inc.

Creator Publications

 * A Spot of Sunshine in the Winter
 * Caliber SS
 * Sword Art Online Light Novel Volume 07
 * Sword Art Online Light Novel Volume 08
 * Sword Art Online Material Edition 03

Characters

 * Jun
 * Kikuoka Seijirou
 * Konno Aiko
 * Konno Yuuki
 * Klein
 * Lisbeth
 * Sasha
 * Shiune
 * Silica
 * Sinon
 * Thinker
 * Yulier
 * Yuuki Kyouko

Guilds

 * Fuurinkazan
 * Sleeping Knights

NPCs

 * Tonkii
 * Pina

Locations

 * New Aincrad
 * Aarun
 * Dungeon
 * Jötunheimr
 * Sylvain
 * World Tree
 * Yggdrasil City

Technology

 * AmuSphere
 * Bidirectional Communication Probe
 * Cardinal System
 * FullDive
 * MediCuboid
 * World Seed

Terminology

 * Artificial Intelligence
 * Color Cursor
 * Duels
 * Dungeon
 * Evil Gods
 * Familiar
 * Magic
 * Monument of Swordsmen
 * Navigation Pixie
 * Original Sword Skill
 * Outside System Skill
 * Potions
 * Quest
 * Races of ALfheim Online
 * Sword Skills
 * Teleport Gate
 * VRMMO
 * Yurudo

Items

 * Potions

Equipment

 * Demonic Sword Gram
 * Holy Sword Excaliber
 * Long Sword

Miscellaneous

 * Ymir

Trivia

 * ALfheim Online is loosely based on Norse Mythology/Viking Mythology, for example, the Yggdrasil, or rather, The World Tree, supported the entire cosmos in the actual myth. Another example is Jötunheimr, actually Jötunheim in the myth, is the icy home of the Frost Giants. And, of course, "ALfheim" is a reference to "Alfheim" in Norse Mythology, for the land of fairies/light elves. In the alternate ending of the Caliber story, Caliber SS, it is also speculated that, lore wise, the castle of Aincrad, which was implemented into ALO at the end of the Fairy Dance arc, is designated as Midgard, the world of humans in Norse mythology, by the NPCs of the game, as all characters in SAO were humans.

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