Full Combo, more commonly abbreviated to FC, is the term that refers to beating a song while correctly playing every note without overstrumming. This is different from simply scoring 100% on a song, since one can "break" (reset) their Multiplier, by overstrumming, and still play 100% of the notes. Every single song in the entire series has been FC'd by at least one person, with the exception of Exile and Trogdor (NTSC). Exile is impossible to FC (due to a glitch) and the NTSC version of Trogdor is also impossible due to the strumming speed of a part of the song exceeding the strum limit of the NTSC version of Guitar Hero II .