I have 2 children aged 12 and 10. I was looking for easy games to play with pen and paper. Immediately understandable. I found a nice one here https://playprintsgame.com/products/pen-and-paper-games-printable
It's called bridg-it... but I would like many more like it. Does anyone know any interesting portals?
Ghoulash is a wonderful intro to tabletop gaming. Two players-- you take turns DMing, and it plays like a roguelite with Battleship-style movement selection.