I enjoyed reading this post on a Chronicle of Higher Education blog, called: What Can Angry Birds Teach Us About Universal Design for Instruction? It gives a simple checklist of what makes this mobile game such a success:
Angry Birds involves practice without penalty.
Angry Birds offers the opportunity for constant feedback.
Angry Birds inherently teaches that different tools have different purposes.
Angry Birds has a built in mechanism for knowledge transfer.
Angry Birds rewards perseverance.
Angry Birds gives no time limit.
Also of interest is this post on an event taking place December 10th in Leeds, UK, called Making Games for Libraries, hosted by Andrew Walsh, who has written on active learning. He also is working on an <a href="http://www.indiegogo.com/infolit-gamese" called SEEK!