The versions for Wii and PS2 have been developed in parallel specifically to take full advantage of each console’s capabilities. Both games push the hardware hard, incorporating many of the gameplay features found in the Xbox 360 version. On the Wii, the control system is specially adapted to make full use of the Remote and Nunchuck to manipulate objects in real-time, a key gameplay feature of Alone in the Dark, enhancing the player’s immersion in the experience.
So, we know it's not going to be as pretty as the Xbox 360 version, but because of the lovely Wiimote perhaps it will play better? We'll be grabbing ourselves a copy of the game later today and will be posting a full review over the next few days.
Alone in the Dark has been released on PS2, Wii and 360 today and will be released on the PS3 later in the year (when the developers have finished reading the PS3 architecture manual).