Dynamax is a feature introduced in the Pokémon video games, specifically in Pokémon Sword and Pokémon Shield. It allows Pokémon to temporarily grow in size and power during battles. When a Pokémon Dynamaxes, its moves become more powerful and can even change into special Max Moves, enhancing their effectiveness. Dynamaxing can only be used once per battle and lasts for three turns. This mechanic adds a strategic layer to battles, as players must decide the best time to use it. Additionally, certain locations, like Max Raid Battles, allow players to encounter Dynamax Pokémon in the wild.