GuitarFreaks (also GUITARFREAKS, abbreviate GF) is a music video game series produced by Konami. The player uses a controller to simulate the playing of an electric guitar. The game consists of music predominantly from rock and roll and J-Pop genres, and is now in its 15th version, GuitarFreaks V4. The 16th version, GuitarFreaks V5, is due for release later in 2008.