In collectible card games and collectible miniature wargames, a booster pack is a sealed package of cards or figurines, designed to add to a player's collection.

Booster packs generally contain a relatively small number of items (6-19 for cards; 3-8 for figurines), randomly assorted. Booster packs are the smaller, cheaper counterparts of starter packs, though many expansion sets are sold only in boosters. While booster packs are cheaper than starter packs, the price per item is typically higher.

Booster packs are generally priced to serve as good impulse purchases, with prices comparable to a comic book and somewhat lower than those of most magazines, paperback books, and other such items.

In many games, there is a fixed distribution based on rarity, while others use truly random assortments. When the distribution is based on rarity, booster packs traditionally contain one or two rares, depending on the game, while the remainder are of lesser rarity.

List of booster pack sizes of different collectible games

Collectible card games

• Call of Cthulhu
  • Booster pack: 11 cards per booster - 1 rare, 3 uncommons and 7 commons.

• City of Heroes
  • Booster pack: 11 cards per booster - 1 rare, 3 uncommons and 7 commons.

• Kids Next Door Trading Card Game
  • Booster pack: 7 cards per booster - 1 scene card, 1 rare and 5 common cards. There is a one in three chance that one of the common cards will be replaced with an ultra-rare card.

• Duel Masters
  • Booster pack: 10 cards per booster - not guaranteed to contain rare cards, although more than one is possible in a booster. If a booster does contain such a card, it will be either uncommon, rare, very rare, or super rare.

• Hecatomb
  • Booster pack: 13 plastic cards per booster - 1 rare, 3 uncommons, 9 commons.

• Lord of the Rings, The
  • Booster pack: 11 cards per booster - 1 rare, 3 uncommons, 7 commons. There is a one in seven chance that a special foil card takes the place of the rare.

• The Gathering
  • Normal booster pack: 15 cards per booster - 1 rare, 3 uncommons and 11 commons, never containing basic lands, except in packs of the Core Sets which are meant for beginning players. A pack may contain a premium (holofoil) card to replace any one card of any rarity.
  • Tournament pack: 75 cards per pack - 3 rares, 10 uncommons and 32 commons, plus 30 basic land cards (roughly 6 of each type). Essentially, 1 tournament pack is equivalent to 3 booster packs plus 30 lands. Each tournament pack is guaranteed to have a premium/holofoil, which can be of any rarity.

• Sailor Moon
  • Booster pack: 11 cards per booster - 1 rare, 3 uncommons and 7 commons. There is a one in twelve chance of one of the cards being replaced with an ultra-rare foil card.

• Ultimate Combat!
  • Booster pack: 15 cards per booster - 1 gold belt, 2 black belts, 3 brown belts, and 9 white belts.

• Universal Fighting System
  • Booster pack: 10 cards per booster - 1 rare or super rare, 2-4 uncommons, and 5-7 commons.

• Yu-Gi-Oh!
  • Normal OCG booster pack: 5 cards per booster - not guaranteed to have rare cards.
  • Normal TCG booster pack: 9 cards per booster - 1 non-common card (can be rare, super rare, ultra rare, and in some cases, secret rare or ultimate rare) and 8 commons. On average, 1 in 6 booster packs contain a super rare, while 1 in 12 contain an ultra rare.
  • Dark Beginning/Revelation / Beginner's/Expert's Edition: 1 tip card plus 12 normal cards per booster - 1 or 2 non-commons (rare, super rare, or ultra rare), with the remaining cards as commons.
  • Jaden Yuki/Chazz Princeton booster pack: 1 strategy card plus 5 normal cards per booster - 1 non-common (rare, super rare, or ultra rare) and 4 commons.

Collectible card games