From Wikipedia:
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. Learn about Gran Turismo 5: Prologue
