Clone Hero is a free, Open Source music rhythm game played using a guitar controller, MIDI drum kit, game controller, or keyboard. The game offers online and local play options for Drums, 5-fret Guitar, or 6-fret Guitar.

The gameplay of Clone Hero is heavily inspired by the Guitar Hero series, and it uses graphical assets from Guitar Hero games. Clone Hero's goal is to hit colored notes in time, with the music determined by the song being played. Clone Hero features a vast library of songs, including official Guitar Hero tracks, as well as custom tracks that the community has created.

Clone Hero supports any PC-compatible controller from the Guitar Hero or Rock Band franchises and can also be played using a keyboard or any other input device. Clone Hero is highly customizable and allows players to configure their controllers according to their preferences.

Unlike the Guitar Hero series, Clone Hero does not penalize players for missing notes, except for breaking a combo. This makes it impossible to fail a song by default, but players can enable this penalty if they wish to add more challenges to their gameplay.

Overall, Clone Hero is a fun and addictive music rhythm game that offers a unique and customizable gaming experience, making it a must-try for any music or rhythm game enthusiast.