GSpaceSim is a project I developed with Francesco Rossi for a C++ course at the University of Bologna. GSpacesim is a 3D space combat simulator developed using SDL, OpenGL and a homemade physics simulator. We presented the project at 2007 Rimini Linux Day. Here is the Sourceforce project page.
I am grateful to Francesco Rossi, that has been the main developer of the project, and with patience allowed me to be a part of it.