A game engine, which will hopefully soon have a more creative repo name.
It uses SFML for multimedia, and it'll probably deal with its own physics (though, if we use this for a game that has particularly difficult physics, we may use an external library for that, unless I can/want to write my own).
The intension is to write a snazzy little game engine that we can easily build games off of. It supports OpenGL, so 3D games are a possibility!