Ultra Force (Japanese: 強化拡張パック ウルトラフォースStrength Expansion Pack: Ultra Force) is the sixth Japanese subset released during the Sun & Moon Era of the Pokémon Trading Card Game. An enhancement of the dual fifth expansion, Ultra Sun and Ultra Moon, it continues the overall Sinnoh and Alola theme, providing cards of Pokémon and characters native to these regions.
The Strength Expansion Pack: Ultra Force is a 63-card subset released on January 19, 2018 in Japan. The subset features Pokémon and characters that debuted in Pokémon Ultra Sun and Ultra Moon in addition to several Generation IV references. It includes cards that provide more support for Ultra Beasts in addition to featuring some of them as non-Pokémon-GX for the first time. The subset includes a number of reprints from both Ultra Sun and Ultra Moon; some straight reprints as well as alternate-type reprints that debuted in the GX Battle Boost subset. All non-rare cards are Mirror Holofoil and do not have a rarity symbol.