During my university years, we mainly used popular game engines such as XNA, Unity and Torque. In order to further my understanding of game development I jumped in to this ambitious project. The project is about a year old and still going. The engine is certainly not ready for comercial use yet "not to mention how long it takes to get there". Just recently my designer and I already started working on a game using this engine. You can find the development diary for the engine on my blog along with some source code.