Gran Turismo 4 cheat codes discovered nearly two decades after the game's release - Variable

A player had discovered cheat codes for Gran Turismo 4. The codes remained hidden in part because they only become available once 365 in-game days have passed. Read more at Variable

The ULTIMATE Gran Turismo 4 Emulation Guide

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Gran Turismo 4 codes discovered nearly 20 years later - Xfire

Gran Turismo 6

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New modifications for Gran Turismos, NASCAR Dirt to Daytona, and

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In-game cheat codes have been discovered for Gran Turismo 4 almost

In-game cheat codes have been discovered for Gran Turismo 4 almost