Anyone know the differences between them?

I think Normal is Normal for Saturn and PSN/XBOX, but I think standard Arcade game actually is hardest on Saturn and Arcade on PSN/XBox.

Not sure how the other difficulties work though on Saturn.

I'd like to see difficulty settings since the game does seem to change between difficulties but we have to figure out what are the difficulty standards are across the board.

Yeah, PSN/XBOX has a normal timer and an arcade timer and a normal difficulty and an arcade one too.

Sorry for necro.

I could probably look into this if really needed. But I always play my attempts at Arcade/Arcade (AI/Timer) on Xbox 360 version. If it's harder than the default Arcade machine setting, then I suppose I just like the added challenge? :)

It's been over a year since my post above, and I know that most people that were active at the time, no longer are. That said, though I don't own a Saturn officially, I am fairly confident that Saturn's "Very Hard" for AI cars is the same as PS3/X360's "Arcade" difficulty setting.

Though I don't normally play on the arcade emulator due to the fact that I prefer the X360 version; I can quickly boot the Arcade up and see what changing the difficulty actually does to the game. If that, too, is only about AI cars, it should behave similar to the ports.

As for the difficulty regarding the timer in the game, I feel like it is pointless to discuss as even when the timer is set to the hardest/lowest; your run is simply not good enough for submission if you can't beat the timer.