I make this french app game orienteering sport for middle school students : https://cartomagic.glideapp.io/
It’s easy, you can use a magic square (3 x 3) with 9 letters (ABCDEFGHI). You’ll find the good position of the letters with the button ‘Règles du Jeu’.
You have many parcours with 12 checkpoint and you must find the good code. You can play indoor or outdoor
What do you think about this?