Super Smash Bros. Brawl (大乱闘スマッシュブラザーズX, Dairantō Sumasshu Burazāzu Ekkusu^?, lit. "Great Melee Smash Brothers X") is a crossover fighting game published by Nintendo for the Wii console.^[10] As the third installment of the Super Smash Bros. series, this title once again features a diverse roster of characters from Nintendo and its second parties to fight in various kinds of matches. It is the first game in the Super Smash Bros. series to feature third-party characters. Most of the game's music is made up of arranged versions of pieces by one of 38 renowned video game composers that originated in previously released Nintendo video games.

As with its predecessors, Super Smash Bros. Brawl is a departure from traditional fighting games, notably in its simplified move commands and its emphasis on ring outs over knockouts. This installment also includes a deeper single-player mode than its predecessors. Known as The Subspace Emissary, this mode is a plot-driven side-scrolling beat 'em up game featuring Brawl's playable characters. Super Smash Bros. Brawl supports multiplayer battles with up to four combatants, and is the first game of its franchise to support online battles through Nintendo Wi-Fi Connection.^[11