After playing the original game I was skeptical of an expansion pack. Especially since it did not continue where the previous story ended. This hesitation aside I was eager to try out Shadows of Undrentide. I bought it on the first day of release and finished it within a week. My first concern was the “20 hours of game play” for single player mode. The game easily surpassed this. Even if you blaze through areas and skip some quests the game lasts much longer than 20 hours. Well worth the $29.95 price tag. If you take your time, investigate every area and try battles a few different ways the game is easily a 40-hour game.