In this “making of”, Lucas Veber explains how he made this masterpiece,  skipping the technical details in order to focus on the main features.

In this website you will find very useful step-by-step Blender tutorials, mostly regarding the Blender Game Engine, plus a complete Python Game API documentation reference with code snippets and examples on every class and method.

Here is a great tutorial on how to do camera tracking in Blender, using the Voodoo camera tracker. The Voodoo software can estimates camera parameters, like position and rotation and reconstructs a 3d scene from image sequences.

At the tutorial, a virtual object is placed in real footage. All credits for the tutorial goes for Sympodius, from the BlenderArtists forums.