The amount of digital art being lost to history is a shame. The quality of many old software titles artwork could be astounding. Much of the art was embedded in the program executable so no available to the average user. These artworks should be preserved to museum archives, efforts to preserve digital art have yet to become a greater reality. Here are some screen-shots from old video games that are favorites of mine.
Here is a great archive of these artworks. http://www.shmups.com/