Played a solo game last night and a 3-person game over lunch at work. Lost both times but definitely a game worth playing.
It's a resource management game in that you have a limited number of Fate Points which you spend or earn. Use your limited number of cards to solve cases, defeat foes, take advantage, or overcome obstacles. Fate dice are occasionally used to improve or hinder your action and victory requires you to solve more cases than foes remaining on the board.
30 min game play is reasonable but the first couple of games will probably take 45-60 minutes as you wrap your head around the strategy and options. I look forward to playing again and will definitely want to add the expansions to get more variety in Book and Character combinations.
Learn how to play the Dresden Files Cooperative Card Game (aka DFCO), coming soon from Evil Hat Prod