Crimson & Purple is the first expansion in the Crimson & Purple series, which was first introduced during the 2022 Pokémon World Championships.It celebrates the return of the game mechanic of Pokémon-ex, which can appear at any stage of development and have high HP and powerful attacks and abilities.

However, if a Pokémon-ex is incapacitated, the opponent takes two Prize cards instead of one.

The Pokémon Company International also unveiled some card design improvements that will be introduced with the Crimson & Purple expansion. The yellow borders of the Pokémon Trading Card Game cards are now grey to match the cards released in Japan. This will make the Pokémon Trading Card Game more consistent around the world, and the illustrations on the cards will stand out even more. In addition, subcategories for Trainer cards - such as Supporter, Item and Stadium - appear in the top left corner to be more visible in hand, Basic Energy cards have another energy icon in the bottom right corner to make them easier to track during play, and expansion icons are replaced with expansion codes and language codes on all cards.