Great idea, very cool loking game, with an intersting story, but the lines should disapear after some time because it's blocking the view of the game, and it's kinda hard to see what are you aiming at.
Viewing post in Knight and Wizard jam comments
The lines are showing you the area of influence of the rule. Some rules are still in effect even when you break the chain. Some rules (like the do not pass blue spheres) disappear completely when broken. Others just stop following what they were attached to and some get smaller once they're broken (but are still active).