One of the contestants says that they think that if you lose, you'll be sold off as a prostitute.

First season: A man is punched several times in the "other room leaving a bloody face. Another main is punched due to "cheating." Past the first season on the "Espoir," the series becomes much darker. The following are spoilers of the second season.

Several instances of curse words (especially "Kisama/bastard") in banter between the contestants as well as the main character Kaiji vs. others. Other stronger curse words are used albeit sparingly by comparison.

The main character has an alcohol dependency. Several people, both affluent and poor are seen smoking cigarettes and drinking.

The gambling is done in a cruel way.