This is a discussion on Alone In the Dark PS2/PS3 within the Alone in the Dark: Inferno forum, part of the A; So there was an Alone In the Dark for the PS2, shown here:
and it looks an awful lot like ...
I heard they Inferno made the game easier, they added more crafting weapons, theres a mission where you needed to get all of the roots to open something, In Inferno, you just need 32 roots i think...thats all I know
Haven't played any of them but a quick look at Wikipedia
The PS2/Wii version of Alone in the Dark is a completely different game from the PS3/X360 version. Though both have a similar plot, it has largely different levels, removing all the freeroaming from the other versions.