Gran Turismo 5 Prologue (グランツーリスモ5 プロローグ, Guran Tsūrisumo 5 Purorōgu) is a PlayStation 3 exclusive title which was announced at the E3 2007. This short version title was a precursor and sampling of Gran Turismo 5 and replaced Gran Turismo HD Concept. The "Prologue" suffix is a self-reference to Gran Turismo 4 Prologue which was released one year before the full version of Gran Turismo 4.[1]