Can anyone recommend a really good thriller anime? Nothing too long, ~40 episodes at absolute most. I've already seen the usuals (Terror in Resonance, Death Note, etc.). I'd love to see something pre-2010, even. I'd take something about gambling too. Thanks.

>>1533337 (OP)
Kaiji: Ultimate Survivor
Monster
Paranoia Agent

Higurashi: When They Cry
Shiki
Another
Rin: Daughters of Mnemosyne