One of the manliest shows around. I have yet to see a show that goes 26 episodes without a single word from a female of any kind.
As for the quaity of the show, like Death note it starts really solid and has the feel or originality however, a plot that is heavy on gambling isnt made for 26 episodes. Had it stopped after 13, it would have been one of the best seinen shows around. Dont get me wrong, the second half isnt as bad as say the second halfs of Death Note or SAO, however it takes away from the show as a whole.
I would recommend the first half to every seinen fan who enjoys dark atmospheres or mature themes. The second half is stuck on single game that is somewhat predictable so if you really enjoyed the first half, I advice to stop there so the show doesnt lose its quality