Monster Rancher Battle Card GB (モンスターファームバトルカードGB?) is a handheld game released in North America on December 23, 1999, for the Nintendo Game Boy Color system. It is the first game in Tecmo's Monster Rancher Battle Card series, featuring a card game incorporating the popular characters from the Monster Rancher series. It was followed by Monster Rancher Battle Card: Episode II for the Sony PlayStation entertainment system which featured additional monsters.