A Booster Pack (Japanese: ブースターパック Būsutāpakku; Chinese: 擴充包 Kuòchōngbāo "Expansion Pack") is a pack of Yu-Gi-Oh! cards from one of the Booster Sets. OCG Booster Packs contain around 5 cards each, whereas TCG packs contain 9 cards. Each pack is guaranteed a Rare
Booster Packs can be bought at most game stores and at some general/department stores.