Pokémon Sleep will celebrate its 3rd anniversary on Monday, July 20. To mark this milestone, a special event, the Third Anniversary Prelude Event, will begin on Monday, July 6, leading up to the anniversary festivities the following week.
During this event, the Pokémon Turtwig, Chimchar, and Piplup will make their debut in the game. Players can expect exclusive activities and rewards related to this anniversary.