With Cash & Rad expansion, you can play your D.E.I. games with up to 6 players; in the box, you will also find two new factions: the smart Camdens (experienced traders), and the hazardous Rads (radioactive and lethal). You’ll use these factions with no restrictions in a D.E.I. game, with any number of players.
Last but not least, the new “Information Market” will be available for all your games: it will substitute one of the Outpost markets in D.E.I. base game.
—description from the publisher