Posted September 03, 2018
This doesn't seem to match with reviews of the game at the time of its release, or the stuff that is already posted in this thread about the video quality at least.
Darkstar52: This way past the point when anyone is going to care but I would like to point out that there is no difference between the data on the CD and DVD versions of Riven the only difference is the number of disks. When Riven was originally released it came on 5 CD's if I remember correctly, the greater capacity of DVD allowed it to be on a single disk. Any difference being seen is either subjective or differences in hardware.
Those all seem to indicate the there is a slight yet noticeable improvement to the visuals in the DVD version.
Adventure Classic Gaming site even has a comparison screenshot in their review.