Gyakkyou Burai Kaiji: Ultimate Survivor, Death Billiards Recommendations
The mindf*ck while playing a 'game' with lives on the line + same producing studios.
The most similar aspect of both anime is how they put a spin on classical games and warps them into a psychological thriller. What is perhaps more important is that these main players learned more about themselves and comments on social themes such as inequality, injustice, and consequences of interactions. However, Kaiji goes a little overboard in terms of gambling and risk-taking while Death Billiards seem to have a supernatural element to it. Regardless, highly recommended if you liked the other.