HeartGold & SoulSilver brings many new mechanics to the Trading Card Game. Pokémon LV.X are no longer present; they are now replaced by Pokémon Prime. Also to appear are new cards reflecting the namesake of the new TCG era: Pokémon LEGEND are another new type of powerful Pokémon introduced. Trainer cards are now reclassified as Goods cards, resulting in three separate classes of what used to be Trainer cards. Similarly to Supporter cards and Stadium cards, which were color-coded orange and green respectively after their reclassification in Diamond & Pearl, Goods cards are now color-coded blue. For the purpose of this and future checklists, Goods cards are marked as "G". The illustration window on all of these cards is now also gold instead of silver.
The set is to come with many different promotional merchandise, much like expansions released previously. Released with the set are the HeartGold & SoulSilver Blister Pack containing three boosters from HeartGold & SoulSilver and one promotional card, the Spring 2010 Collector Tins with four boosters and one of three Pokémon Prime promotional reprints, and the HeartGold & SoulSilver Poster Pack containing two boosters and either a Lugia or a Ho-Oh promo card - plus two promo packs, and a HeartGold & SoulSilver poster. All these products will be in stores Feb. 10, 2010.