Best programming based games [closed]

I used to have a lot of fun coding my own robot with Robocode in college.

It is Java based, the API is detailled and it’s pretty easy to get a challenging robot up and running.

Here is an example :

 public class MyFirstRobot extends Robot {
     public void run() {
         while (true) {
             ahead(100);
             turnGunRight(360);
             back(100);
             turnGunRight(360);
         }
     }

     public void onScannedRobot(ScannedRobotEvent e) {
         fire(1);
     }
 }