CORPS VDS is designed for use with CORPS, but is not required to use it or to transplant your vehicles to other game systems. CORPS VDS is a generic vehicle design tool for CORPS and other realistically grounded rpg's. This doesn't prevent VDS from having rules for magical power plants for science fiction topics, just that VDS treats everything in a logical, consistent fashion. For those of you familiar with our 3G3 product, it is about as complex (160 pages), with chapters for each type of vehicle subsection (power plant, power train, structure, etc.). VDS is an extremely detailed and number-heavy book, so if that is not your cup of tea, take a look at EABA Stuff! instead.