From the back of the book: Unifying Force is a campaign for the Star Wars Roleplaying Game (SWRPG). Set during the Rise of the Empire Era, the campaign deals with the characters coming of age in the Clone Wars, a time of galactic strife that affects all citizens of the galaxy. The campaign is interactive – the results of each group playing the adventures will shape the campaigns future direction. Either the Wizards of the Coast version (D20) or the West End Games version (D6) of the SWRPG can be used to run the campaign.