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.
The animation in this is more on the loose side and the plot is more light hearted, but they both have a similar atmosphere. It's a short one shot that takes place in a bar where the main character learns something in the end.
In both of these series, after death people are put into a strange place, where they're forced to take part in a deadly game which real purpose they don't know.
The reactions in face of dying (again?) are similar.
Both are short psychological movies where matter of life and death is the main theme. While in Death Billiards it´s about a game of life and death, in Kuro no Sumika it´s about grimm reapers. Both are part of Anime Mirai project.
Both MC's are skilled and talented in the sport they play
Both mc's are intelligent and laid back and never break under pressure
In the stories the MC's are later on forced to play from the higher ups with alot on the line
The two series have Psychological, game, drama, Seinen elements
Well, to begin with, both anime have the main theme of psychology. There are twists and turns in the plot which leave you baffled and at the edge of your seat. On top of this, the Man in Death Billards and Light in Death Note both gradually spiral into insanity.