Nintendo revealed its Consolidated Results for the Years Ended March 31, 2018 and 2019 report which indicted that Pokémon Let's Go, Pikachu! and Pokémon Let's Go, Eevee! has sold 10.63 million units. Top Selling Titles Sales Units figures were also updated and a list of the sales for Pokémon games is below.

Operating Results and Financial Positions for the Fiscal Year Ended March 31, 2019

The results for this fiscal year showed strong software sales for Nintendo Switch, which contributed to the expansion of hardware sales. In particular, Super Smash Bros. Ultimate recorded sales of 13.81 million units, while Pokémon Let's Go, Pikachu! and Pokémon Let's Go, Eevee! sold 10.63 million units and Super Mario Party sold 6.4 million units, making them all major worldwide hits.

Outlook for the Fiscal Year Ending March 31, 2020

Nintendo Switch has continued to spread quickly around the world since launch, providing a foundation for further business growth. In order to maintain this momentum, we will release Nintendo Labo Toy-Con 04: VR Kitin April, Super Mario Maker 2 in June, and Fire Emblem: Three Houses in July, all worldwide. In addition, Pokémon Sword and Pokémon Shield, Animal Crossing (temp.) and The Legend of Zelda: Link’s Awakening are slated for release in 2019. Furthermore, major titles from other software publishers are scheduled to be released. We aim to contribute to momentum of the platform by continuously introducing attractive new titles in addition to popular titles already released.

Top Selling Titles Sales Units - As of March 31, 2019

Pokémon Diamond Version / Pearl Version - 17.67 million pcs.
Pokémon X / Pokémon Y - 16.39 million pcs.
Pokémon Sun / Pokémon Moon - 16.15 million pcs.
Pokémon Black Version / White Version - 15.64 million pcs.
Pokémon Omega Ruby / Pokémon Alpha Sapphire - 14.19 million pcs.
Pokémon HeartGold Version / SoulSilver Version - 12.72 million pcs.
Pokémon: Let's Go, Pikachu! / Pokémon: Let's Go, Eevee! - 10.63 million pcs.
Pokémon Ultra Sun / Pokémon Ultra Moon - 8.37 million pcs.

Sources: https://www.nintendo.co.jp/ir/en/finance/software/3ds.html