Pokémon Ultra Sun and Pokémon Ultra Moon are the second paired versions of Generation VII and feature an alternate storyline from Pokémon Sun and Moon. The games are available on the Nintendo 3DS.

The games were announced worldwide on June 6, 2017, at 11 pm JST through Nintendo Direct. The paired versions were released worldwide on November 17, 2017. All copies of the game are playable in nine languages: Japanese, English, German, Spanish, French, Italian, Korean, and Simplified and Traditional Chinese.

The games feature Pokémon that did not appear in Pokémon Sun and Moon, including, as a series first, entirely new Pokémon introduced in the midst of a generation.

Recently, Famitsu has revealed that the Japanese domestic game market is up 121.8 percent (totaling ¥3878.1 billion, or $36.45 billion) in FY2017 (March 27, 2017, to March 25, 2018), largely due to the success of Nintendo Switch console, which was the leading hardware for the year selling 3,512,773 units.

Hardware was up 152.7 percent overall although software saw little increase at 100.1 percent compared to 2016. 2017 did see seven million sellers, however, compared to just four in 2016 with Pokémon Ultra Sun and Ultra Moon the best-selling title overall. A list of the top selling software is as follows:

  1. Pokémon Ultra Sun and Ultra Moon (3DS) – 2,198,231
  2. Splatoon 2 (Switch) – 2,146,190
  3. Monster Hunter World (PS4) – 1,917,492
  4. Dragon Quest XI: Sugisarishi Toki o Motomete (3DS) – 1,763,948
  5. Super Mario Odyssey (Switch) – 1,613,076
  6. Mario Kart 8 Deluxe (Switch) – 1,397,018
  7. Dragon Quest XI: Sugisarishi Toki o Motomete (PS4) – 1,353,432
  8. The Legend of Zelda: Breath of the Wild (Switch) – 563,274
  9. Yokai Watch Busters 2: Hihou Densetsu Banbaraya (3DS) – 491,779
  10. Monster Hunter XX (3DS) – 417,119