City of Rules: Rule Zero

The purple dome descends and 18 million people are trapped in Haicheng. An unknown voice announced the start of the first game, and no one knew when it would end. Shen Yue watched her sister disappear in the white light, and a black tower awakened deep in her consciousness. Putting on his self-made exoskeleton and walking into the maze of death, he discovered that... The rules were being quietly obliterated. And the fragments sleeping in his body hold a secret far greater than the dome. My sister left only six words: live and find me.