Guitar Hero II is a music video game developed by Harmonix Music Systems and published by RedOctane. It is the second installment in the Guitar Hero series and is the sequel to Guitar Hero.

Like the original Guitar Hero, the player uses a guitar-shaped peripheral to simulate the playing of rock music as notes scroll towards the player. Most of the gameplay from the original game remains intact, with new modes and note combinations being the major additions. The game features more than 40 popular licensed songs, many of them cover versions recorded for the game, spanning five decades (from the 1960s to the 2000s).