The Pokémon TCG: Scarlet & Violet—Twilight Masquerade Build & Battle Box is a pre-release product that contains a 40-card ready-to-play deck, four booster packs, and a code card for Pokémon TCG Live. Players use the included cards and the four booster packs to construct a deck, often focusing on the unique foil promo card that comes in each box, which could be Tatsugiri, Thwackey, Infernape, or Froslass.