Guitar Hero: Smash Hits is a rhythm game for the Nintendo Wii, part of the popular Guitar Hero series. It's a compilation of the most beloved songs from previous entries, allowing players to strum along with classic tracks using guitar-shaped controllers to match on-screen prompts. The game covers various musical genres, from rock to metal, and features multiplayer modes where players can engage in head-to-head battles or cooperate in a band setup. Smash Hits supports the Wii's unique motion controls, adding an extra layer of immersion to the guitar-playing experience.