Demon’s Cage , The Devil’s Cage , 恶魔囚笼 Èmó qiú lóng

Demon’s Cage is a Manga/Manhwa/Manhua in (English/Raw) language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.swateam.me fastest updating comic site. The Summary is

This is an underground game without any protection! It is filled with a group of madmen chasing power, treasure, and life… The protagonist Qin Ran, who is about to die, chooses to enter it resolutely – for the chance of living!