Sorry, I'm afraid I don't know. The info card inside the GT interface says "2001", but the title screen of the game itself has a copyright date of 2000. If there's some way I can tell in-game, let me know, and I'll check for you. I will say that the phrases they have you type suggest it's not a translation. The cutscenes could be, hard to tell. But the typed phrases and sentences are obviously original english and not some Japanese version of English that we sometimes see.