First Impact and its complementary GX Starter Deck were the first official TCG products translated into Thai and Indonesian, and the first released under the unified Pokémon brand transcription. These products were released in Thailand on February 1, 2019, and in Indonesia on August 8, 2019. Both countries held events to promote the launch ahead of its general release in stores. In Thailand, the First Impact Challenge was held in Bangkok on January 19, 2019. In Indonesia, the First Impact Grand Launch Event was held in Jakarta between August 8 and 11, 2019. The cards in both languages are produced by The Pokémon Company in Japan, therefore some aesthetics of the Japanese cards are retained, such as silver colored borders, Holofoil borders for standard Rare prints, regulation marks, and rarity symbols. Features of cards released outside Japan are also present, such as the image used on the reverse and the position of the copyright on Sun & Moon Series cards. This set is composed of Sun & Moon Era cards, ranging from the dual Collection Sun and Collection Moon expansions to the GX Battle Boost subset.
The set is split into two sets, Set A and Set B, each of which focuses on specific types. Set A features Grass-type, Fire-type, Water-type, Lightning-type, and Dragon-type Pokémon, while Set B features Psychic-type, Fighting-type, Darkness-type, Metal-type, and Colorless-type Pokémon. Each pack contains five cards and one stock basic Energy.