YGGDRASIL

YGGDRASIL(ユグドラシル) is a fictional online game of overlord.

Introduction
YGGDRASIL is an DMMO-RPG (Dive Massively Multiplayer Online Role Playing Game) developed in Japan, serviced from 2126 AD to 2136 AD. YGGDRASIL needs exclusive console to play, which records logs for a week. Though the game goes on virtual reality, it does not provide sense of taste and smell, and limited sense of touch due to the law. Also It does not realized expression on the face, due to the lack of technology when the game was developed.

The most distinct feature of YGGDRASIL is its flexible system. Player can select numerous races and jobs, and creating tool for customization is also available. It seems that the customization can be applied in broad area, even in the step of basic programming.

World
As it can be guessed from the title, YGGDRASIL mainly refers Norse mythology, and has nine worlds based on it : Asgard, Álfheimr, Vanaheimr, Niðavellir, Midgard, Jötunheimr, Niflheim, Helheim and Múspellsheimr. Each world is a leaf of Yggdrasil. Other leaves were eaten by Navagraha Word Eater, or shed and transformed into world class items.

Level
Maximum level of player is 100. When a player character dies, in loses 5 levels and drops one's equipment. Yet death of character with level lower than 5 just makes one back to 1. This penalty can be relaxed by using certain revival skills or cash items. When a player revives by skill, one can select the locations to revive. NPC belongs to player or guild can revive instantly my paying golds.

Races
Races of YGGDRASIL can be roughly categorized into three taxa. There are more than 700 races, including racial class that needs certain level of low rank racial class to learn. Some items can change races permanently.
 * Human races include human, elves, dwarves, etc. Human races are weakest in basic status and cannot have racial level. Instead they can learn more classes which provides high status or powerful skills more easily, giving them high potential. Adding familiar appearance to these advantages, human races were most popular in YGGDRASIL.
 * Demi-Human races include orcs, orgres, lizardmen, etc. Demi-Human races can get more basic status and have racial level. Dem-Human races are similar to the average between Human races and Heteromorphic races.
 * Heteromorphic races include slimes, vampires, devils, etc. Heteromorphic races own most powerful basic status, which can be even more strengthened by increasing their racial level. High-rank races also provide special ability similar to that of monster's. Yet Heteromorphic races were very unpopular, as the racial level limits job level one can learn, and PK on Heteromorphic races doesn't give any penalty to the player who killed Heteromorphic race player.

Classes
More than 2,000 classes exist in YGGDRASIL. Basically 15 is the highest level of single class, yet some high-rank classes seems to have lower level limits. Thus a 100 level player owns at least 7 classes. If one ignores efficiency, it is also possible to get a hundred 1 level classes. Of course there are some 'optimized' class builds discovered by players.

Guild
A guild can conquer a dungeon and use the place as their headquarters. Naturaly, the guild which owns a dungeon prepares NPCs to protect their base. There are tree categories of theses NPCs.
 * Spawn NPCs pop-up automatically from the dungeons. They don't need gold to summon or maintain, yet they are under 30-level and do not have enough power to protect the stronghold.
 * Mercenary NPCs can be summoned by spending guild finances.
 * Custom NPCs can be customized freely, within capacity of level provided by guild stronghold. Guild headquarters with lowest rank provides 700 level. This capacity can be increased by using higher-ranked dungeon, cash, etc. Customization includes not only level, equipment, and appearance but also AI. Thus custom NPCs can be used as powerful guardians. Of course, its free too customize the NPCs just for decoration.

Magic
More than 6,000 spells exist in YGGDRASIL. A 100 level spell caster normally learns 300 of them (3 / caster level in Web Novel.). Even basic functions such as message needs spell to use, so most of the spell casters suffers insufficient capacity of their spells.

Rank of magic is divided into eleven steps. Rank 1 to 10 and Overrank Magic. Over rank magic has miraculous power even when it is compared to 10th rank Magic, yet it needs casting time and cool down to whole party to activate over rank magic again. Casting over rank magic decreases the caster's defense, and certain amount of damage cancels the casting.

Related article: List of Spells

Items
Ranks of Items follow these stage. Items drop as a data crystal, and player can produce item freely in the capacity of crystals, including options, appearance and name. Most players named their equipment referring legends and mythologies, to make the item easy to sell.
 * Lowest → Low → Middle → High → Highest → Legacy → Relic → Legendary → Divine
 * Artifact is not related with rank. It just means items with fixed data. So there can be artifacts with low class.

World Class Items are items over the limit of normal ones, many of them can ignore or even change game systems of YGGDRASIL.

Related article: List of Items

Monsters
Most powerful monsters in YGGDRASIL are called as world class enemy. Even Legion (6 parties with 6 players for each) is hard to fight against it. Some of them are related with world class items.

Related article: List of Monsters

YGGDRASIL and the New World
Once every 100 years, players of YGGDRASIL teleports into the new world without reason. It seems that the first teleportaion occurred 600 years before. Knowledge and power of YGGDRASIL players usually turned over the world, making them as legendary figures.