I've spent 30+ years fiddling with sports simulation games and using them to learn how to code. I think the only thing that made me finally finish this app was the fact that professional tennis has not been played in four months, but maybe also because I wanted to hone my Flutter skills. So here's my lifetime side-project -- a tennis simulation app that's neither a pong derivative nor a sports management game. It's not even really a game at all. But you can add yourself to the player list, and tap away to see how you do. Available for testing on Android, coming later for iOS.
One of the most fun projects I worked on this year was a recreation of William Higinbotham's 1958 videogame, Tennis For Two, which has been installed in the New York Historical Society's Silicon City exhibition, up through mid-April, 2016. I worked with Brookhaven National Laboratory to build an accurate recreation of the original game in Unity, and the end result is something that I'm quite proud of. I wrote a bit of a postmortem about it. If any of you will be in New York City during the exhibition, I think you'd enjoy it. For best results, bring a friend to play against!