All Star Tennis 2000 is one of those weird little Game Boy Color sports games that never made it to the US—Europe got it, but Ubisoft pulled the plug on the North American release for some reason. It’s a straightforward tennis sim with a decent roster of pros (for the time, anyway), and the controls are simple enough that you can pick it up fast. The pixelated players move a little stiffly, but the ball physics aren’t half bad once you get used to it.

Fun fact: If you dig around, you’ll find a hidden exhibition mode where you can play as a kangaroo. No, I’m not kidding.