Snake is a project mainly written in C++, it's free.
A small snake game created in SFML (WIP)
A small good ol' 2d snake game in C++ using SFML
A small snake game coded in C++ using SFML library (http://www.sfml-dev.org/)
Nothing fancy, just a raw snake game I did a while ago.
Feel free to use anything, as I was mostly just testing SFML.