Planet Isekai: SKYLINE v.20

Sidlangit is an artificial moon orbiting Earth, created by the game development company Sidapa Corp. It is populated with humanoids that have realistic human features, built with artificial synthetic skin. Sidapa Corp. controls the behavior and memories of these humanoids from a secret remote base on Earth.

Sidlangit is also the name of a game created by Sidapa Corp. It's a role-playing game where players choose an avatar humanoid from Sidlangit Planet (as Sidapa Corp. describes the artificial moon Sidlangit). The players' minds sync with their chosen avatars, becoming part of Sidlangit Planet. The game is set in a fantasy medieval age where dragons, monsters, wizards, humans, and elves dwell. It was the most popular game in the world and earned trillions of dollars in profit.

In 2074, Sidlangit v.12 ended when a player won the game. After receiving the prize, the player mysteriously vanished. A year later, a world war erupted on Earth. It lasted six years, and the whole world fell into despair and chaos. Every country exhausted its resources, leaving them with very few ways to repair their nations.

Almost all hope was gone until, in 2084, Sidlangit came back online as Sidlangit v.20, offering 20 trillion dollars to any player who could win the game, plus resources to rebuild their country.

Who would dare to take on the challenge without uncovering the hidden catch?