Pokémon GO Fest 2026 will focus on Mega Mewtwo X a fan favourite. The creature appears as the main raid boss and as a reward in the new ‘Genetic Mastery’ quest. Players can instantly choose the X form or the Y form, triggering debate over which is stronger. Eurogamer outlined the Y form’s weaknesses and optimal moves recently. The event runs without tickets, allowing the fest to all players seamlessly. A Times Square Mewtwo display earlier this week drew pushback; Niantic has issued a prompt public response.