After a careful evaluation of many pros and cons, today we replaced the “turn” command in Karel the Robot in NCLab with two commands “left” and “right”. The main reason was that in more complicated tasks such as navigating through a maze, the robot was basically only rotating, resembling a small tornado. I already changed all Displayed Projects, Solutions, and Solution Manual. Now I am still working on the main Tutorial, but it should be finished later today. BTW, there are some very cool new games, check them out!