How a Modder Discovered Secret 'Gran Turismo 4' Cheat Codes 18 Years After the Game Was Released

When a game is as as old as Gran Turismo 4 — which just celebrated its 18th birthday in February — you kind of assume everything there is to know about it has been unearthed already. That’s why the GT4 news that made the rounds on Twitter this past weekend came as such a surprise: A modder discovered cheat codes in the 2005 racing sim that nobody knew about before. Here’s how it happened, according to the individual who made it possible.

Gran Turismo 5's Decrypted Game Files Reveal Hidden Cars & Tuning Upgrades – GTPlanet

It's far from complete, but I've managed to amass a decent Gran Turismo collection up to GT6. : r/gamecollecting

Polyphony Digital Take Action Against “Illicitly Modified Game Data” in Gran Turismo 5 – GTPlanet

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

Gran Turismo 4 Cheats: MORE DISCOVERIES

Cheats for PS2 classic Gran Turismo 4 discovered after nearly 20 years

Gran Turismo 3: A-Spec - Wikipedia

Cheats found in GRAN TURISMO 4 after almost 20 YEARS

Gran Turismo 4 Cheat Codes Discovered 19 Years Later - GameSpot