Pogs are small, circular cardboard discs that became popular in the 1990s as a children's game. Players would stack these discs and take turns using a heavier disc called a slammer to knock them over. The goal was to collect as many Pogs as possible, with players keeping the Pogs they flipped. The game originated from a traditional game played in Hawaii called menko. Pogs often featured colorful designs, including images of cartoon characters, sports teams, and other themes. The popularity of Pogs led to a variety of collectibles and merchandise, making them a significant part of 90s pop culture.