Pokémon GO players will soon have another reason to stop by their local LEGO Store. From Aug. 3 through Sept. 30, participating LEGO Store locations in the United States, United Kingdom, Poland, France, Germany and Australia will host a special Pokémon GO collaboration featuring event-themed Timed Research, LEGO-inspired stamp rally activities and exclusive in-game rewards. Trainers can take on one-star Pikachu raids, collect event stickers and earn encounters with Pikachu carrying a special background. Lucky players may also encounter a Shiny Pikachu during the event. The promotion is part of the ongoing partnership between Pokémon GO and the LEGO Group and will also showcase LEGO Pokémon SMART Play experiences in participating stores.
Source: Official Pokémon GO blog