The Nebula’s Civilization is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Choi Seong-woon, achieves the top rank in the game “Lost World,” successfully completing all the game’s achievements. However, his joy doesn’t last long when he receives a suspicious email and is summoned to the real “Lost World,” where he embarks on a competition to become a “god.”