Imperial Settlers: We Didn’t Start the Fire - Rules of Play says:
Imperial Settlers: We Didn't Start The Fire is the third Empire Pack for the Imperial Settlers engine-building card game. Join your favorite factions, best your opponents, and expand your empire! The expansion includes fifty new cards, increasing replayability of the base game, as well as borders that are placed between each pair of players.
Imperial Settlers: We Didn’t Start the Fire Review:
Don't just take our word for it! Check out this review of Imperial Settlers: We Didn’t Start the Fire.