Gigantamax Rillaboom returns to Pokémon GO!

Gigantamax Rillaboom returns to Pokémon GO in six-star Max Battles during Max Battle Day! If you’re lucky, you may encounter a Shiny one! This event takes place on Saturday, August 1, 2026, from 2:00 p.m. to 5:00 p.m. local time.