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.

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

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Cheats found in GRAN TURISMO 4 after almost 20 YEARS