Now that you changed the background color of a bot brain to Red when they are learning maybe change the color of the line that indicates where a dragged command will drop to blue or something else easier to see.  The red line on the red background is difficult to see.

Great game, and great improvements!  Keep up the good work.

Good idea. Thanks!

Just on this, maybe a "clear" button may be useful.

I love this game, and it does a good job in learning programming, but it does get messy X-D