Pokémon GO Fest 2026 will focus on Mega Mewtwo X a fan favourite. The creature appears as the primary raid boss and as a loot in the fresh ‘Genetic Mastery’ quest. Players can freely choose the X form or the Y form, igniting debate over which is more powerful. Eurogamer outlined the Y form’s vulnerabilities and optimal moves in its latest guide. The event runs without tickets, allowing the fest to all players smoothly. A Times Square Mewtwo display earlier this week drew negative reaction; Niantic has issued a prompt public response.