Featuring the three Alola region starter Pokémon, the Sun & Moon Starter Set Decks are a trio of Theme Decks each released separately in Japan. Released on December 9, 2016, the Decidueye-GX Starter Set Grass (Japanese: スターターセット草 ジュナイパーGX), Incineroar-GX Starter Set Fire (Japanese: スターターセット炎 ガオガエンGX), and Primarina-GX Starter Set Water (Japanese: スターターセット水 アシレーヌGX) each include a rulebook, damage counters, status counters, a custom coin, playmat.
Each Starter Set contains two sections of cards, which are packaged separately. The first section will always contain a fixed selection of Pokémon and Energy cards relative to the type of the titular Pokémon-GX, plus multiples of other cards for a total of 39 cards. The second section contains 2 different groups of Pokémon, an equivalent set of Energy cards, and a selection of single cards for a total of 21 cards. None of the cards in the set have rarity symbols.