What is the ultimatum game? what did the researchers find when they used this game in other cultures?

This game shows that people can’t accept injustice. In the game, there are two players. The whole idea is how they are going to divide a good. The first player chooses the amount of the good, whether it is money or another commodity, to keep for him or herself, and then, he or she chooses how much to send to the second player. The second player either accepts or rejects the proposal of the amount of goods or commodities that the first player decided to share. In cross-cultural studies, researchers have found that different cultures have different ideas about what is a fair amount to share or what is expected.