Location-Based Game, Mixing RL with Fantasy Setting

[lighthouse]

I am lucky, and I know that...I tell my boys the same thing... !

Because I don't want too much game-stuff to intrude on our family day's out, I was thinking of giving the boys real-world objectives (such as the DRAGON script), or find something in a castle, or skim a stone 6 times on a very special lake or something. That is the trigger that Merlin needs to change the event in the past - so there would be no rules, as it were. Its just a physical thing, or some item I want them to find or discover .... will it work?

Try and you tell us! It seems worthy to experiment