At the end of 2011, after attending a GameJam hosted by an online game development course I was on, a group of us decided that we would have a go at making a game together.
The game was a going to be a first person tower defence. As the only coder, I was put in charge of making things happen. I had never attempted to make a 3D game before but I was pointed to the UDK and just got on with it. The project kind of fell apart as we all had other responsibilities to attend to (seeing as we were all students).
Below is a link to the source code / assets I used as well a development diary I was keeping.