The Mundial Ronaldinho Soccer 64 meme originates from a bootleg modification of the game International Superstar Soccer 64 for the Nintendo 64, featuring the legendary Brazilian footballer Ronaldinho. The intro sequence, characterized by its low-fidelity 3D graphics, high-energy Brazilian Portuguese announcer, and the iconic shout of the game's title, became a viral sensation in the late 2010s. It is frequently used in bait-and-switch videos and shitposting as a nostalgic yet chaotic reference to the era of unlicensed South American game mods. The meme perfectly captures the 'loud equals funny' aesthetic and remains a staple in retro-gaming and football internet culture.