What Changed in Aliens Unlimited from its original to “revised”?
According to the Palladium Web page, Aliens Unlimited has been updated slightly to make it completely compatible with HU2, Rifts, and Skraypers. It includes New (alien) super abilities, bionics, & magic. Essentially, the powers from the original edition were all redone with HU2, and found there, and the space freed up by this was used to provide more setting information and equipment. Now, if they’d only do the same for Villains Unlimited.