YoFrankie! is a game developed and funded by The Blender Foundation (and the community) in other to enhance Blender’s gaming capabilities; and design and implement new features. As a result of the development of this game, all the features developed within the project are now available in new versions of Blender, the 3D software.
It is very interesting the history behind the Blender project. I recommend you check it out. It is one (of many) success cases in Open Source development.
