I don't think holding wargames in class would make them boring because of that. I would've enjoyed such a thing. For normal classes some kind of "hacking advent

I don't think holding wargames in class would make them boring because of that. I would've enjoyed such a thing. For normal classes some kind of "hacking adventure" where using view source and other tricks to move forward is necessary I also don't see any boring faces. The teacher who sells this stuff to the children is key here. This is why teachers should have as much time for preparation as possible. At best this preparation would be like preparation of an actor (with extensive knowledge of the plot), because everything else is already at hand (just my idea of what teachers should be).