Hi, we developed a new Game with the same physic engine like Angry Birds (Box2D). Feel free and please give me your feedback. http://itunes.apple.com/us/app/barney-the-box/id546117331 We will release a new version soon with a better possibility to drag and drop the boxes and stones and it will have world 2 included. Our goal was to build an app that isn't as simple as Angry Birds and that tests your patience. More information like the story of Barney and a little gameplay video can be found here: http://barneythebox-app.com/ Thank you for your feedback.