This edition is the same as the earlier edition except for the materials used in its construction. Gone is the cardboard slipcase, replaced by a pair of red paper covers. The game book covers are made of the same material and the silver stamping of the slipcase edition books has been replaced with a white ink stamp.
According to the Ace of Aces Collector's Guide (http://maverick.brainiac.com/aoa/aoa1.html#09), Nova designer Dennis Greci described the paper cover versions as "an unfortunate attempt to produce books less expensively... Unfortunately, the covers don't hold up well to continued use. They are actually dangerous to inanimate wet objects . . . ink tends to bleed out of the covers when they become wet."