I Became an Evolving Space Monster is a Manga/Manhwa/Manhua in english language, Action 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

In the vast expanse of space, inside a cargo compartment made of cold metal, I couldn’t help but acknowledge one thing: I had become an antagonistic extraterrestrial life form in an SF survival game.