The game of pogs originated in the 1920s on the Hawaiian island of Maui. It became unexpectedly popular in the continental United States in the 1990s. Pogs is played with small picture disks (originally, with milk caps). To begin the game, each player takes the same number of pogs. At the start of a turn, each player makes a stack of at least four pogs, with their faces down. On each turn, one player takes a slammer and strikes a stack of pogs with it, getting to keep the pogs that land face up. At the end of the game, the player with the most pogs is the winner.