.SM File Extension

Song file format used by StepMania, a dance and rhythm game that supports dance pad input; includes song information and references to music and image files; may be used for dance, pump, beat, and guitar songs.

SM files are saved in a text format and include several lines that begin with "#" followed by a specific tag. Examples of tags include TITLE, ARTIST, BACKGROUND, MUSIC, and BPMS. Each tag is followed by a value, such as a name, number, or filename.