Welcome back to Euphoria! While you were away the Icarites descended from their lofty perch among the clouds imposing a new way of life upon the Euphorians Wastelanders and Subterrans. Is this a fresh start for the dystopian citizens or will history repeat itself? Ignorance Is Bliss is a "more stuff" expansion. Or perhaps a better way of putting it is "alternative stuff." For example there are a bunch of new recruit cards and market tiles that you can use as an alternative to the recruits and markets in the original game (they aren't designed to be mixed together with the original recruits and markets). There's also a new type of recruit card (not a new faction just a new type). Ignorance Is Bliss is also a "player count" expansion. The original game of Euphoria was for 2-6 players but the expansion adds an Automa mode (an intelligent AI system) that expands the game to 1-6 players. The Automa system is also designed for optional use in 2-player games so they feel more like 4-player games.