From the publisher:
The complete all-in-one collection. Includes the base game (Castle Panic), 4 expansions (The Wizard's Tower, The Dark Titan, Engines of War, and Crowns and Quests), and 13 promo items, all in the new art style of the second edition.
Second Edition includes all new art, a custom die, and heavier card stock. Changes to the board and cards improve readabilty for color-blind players. Also includes the newest expansion, Crowns and Quests.