World Fraction

The World Fractions (森羅変転 or ワールド・フラクション) are global-level magic phenomenons that altered the world of Elder Tale. According to ReGan, it has happened three times in the history:

World Fractions seem to be where new races or people enter the world and are events of extreme change and importance. No one knows what caused the third fraction, but they are able to be caused by magical technology such as the ancient Alv's, as was done by the People of the Land during the second world fraction spell to summon the adventurers to the world of Elder Tale during the beta tests.
 * The First World Fraction (亜人間の発生と古来種の出現) happened around 300 years ago when the six scrapped princesses were about to be killed. After this event, demi-human species, including Goblin, Kobold, Ogre, Orc, Troll, Gnoll, Lizard, Sahuagin, and Lizardman appeared.
 * The Second World Fraction (冒険者の出現) happened 60 years after the first one (240 years ago). Caused by People of the Land using Alvish Magical Technology. This first summoned the adventurers to the world of Elder Tale during the beta tests to defend them from the overwhelming hordes of demi-human monsters summoned by the Six Scrapped Princesses.
 * The Third World Fraction (冒険者たちの定住化) happened in May and resulted in the Adventurers' permanent residence in the world of Elder Tale. Adventurers call this event the Catastrophe. Players noticed that, unlike before, the People of the Land suddenly acquired their own personalities and stories (although it is the other way around from the Landers' perspective). Also, Adventurers are now able to use Overskills.

Shiroe's Magic Contract could be considered as global-level magic, as it is able to override a fundamental law of Elder Tale by turning a Lander into an Adventurer. The potential for chaos is immeasurable, which is why Shiroe keeps this ability an absolute secret.

Plant Hwyaden's Zeldys reactivated the transport gate in Minami and has possibly rewritten how transport gates work using his Overskill, Mana Breeder, with Jered Gan's research.

Trivia

 * The Second World Fraction, when the Adventurers appeared, coincides with when Elder Tale first launched its beta version, 20 years ago before the current events took place, with Nyanta among the beta testers.