Games to introduce a boy to Fedora

Some days ago, I introduced my girlfriend's cousin to Fedora. He is a 13 years old boy, who goes to school and like to play video games. He really likes horror games so I let him know that he can run his favourites games also under Linux (those games series are available for all main operating systems) So I installed Fedora on his laptop and actually he is heavily using it instead of the previous proprietary operating system. I am happy I introduced a young boy to Fedora. Next step will be to inform him about Free Software topics. On September he will start a kind of high schools that is specialised in information technology, so I thought this first step in Free Software is pretty important for him.