Trapped Inside the Beta Test World for 1000 years is a Manga/Manhwa/Manhua in english language, Manhua 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

Trapped in the online game “Fantasy World”, after 177 cycles of deleted files and beta testing, Char has attacked all the beautiful NPCs in the game, the wives of the novice village, the priests of the church, the candidates for the dark elf queen, the Valkyrie chosen by the gods, etc. . Just after he singled out all the bosses and used hundreds of ways to clear the “Fantasy World”, the “Fantasy World” public beta was released! The constant addition of players has changed the immutable NPCs, and Char is determined to find a way to leave the game in the public beta…