Gotta Catch Em All began as the English slogan for Pokemon, the Japanese media franchise launched in the 1990s around collecting and training creatures. It became widely known through the Pokemon animated series and its opening theme, where the line helped define the show's goal of finding every Pokemon. As Pokemon games, cards and shows spread worldwide, the phrase entered everyday gaming language and online edits. Today it remains shorthand for completion, collecting and nostalgic fandom, which is why creators still use the short clip for wins, reveals and collection milestones.