Ever since it first launched in July 2016, Pokémon GO has always been a top 20 grossing game on iOS in the U.S. Niantic‘s immensely-popular is currently the sixth highest grossing game on the App Store, primarily thanks to the first-ever Adventure Week. During the latest in-game event, which runs through May 25, Pokémon such as Omanyte, Onix and Sudowoodo will appear with greater frequency. Plus, your Buddy Pokémon will give you Candy after walking only one quarter the usual distance.
Source: Daniel Ahmad @ZhugeEX
Pokémon Blog 