This is basically Kaiji but with a main character who calls himself crazy because he is obsessed with clowns or something weird like that. He kind of gave off a sober Chinese version of DC's Joker vibe lmao.

Anyhow, like its Japanese counterpart, the story is pretty identical in terms of the first challenge (i loved it btw) and the main character is smart and calculative yet soft-hearted, which actually makes you root for him despite me making fun of him in the first paragraph.

I recommend watching this, but Kaiji is even better and there is no cliff-hanger!