Mario Maker 2 and Game Builder Garage are great for getting into game creation (or at the very least level creation). Super intuitive as well. As for extending

Mario Maker 2 and Game Builder Garage are great for getting into game creation (or at the very least level creation). Super intuitive as well. As for extending critical thinking, I feel puzzle based games are great at this like Captain Toad Tracker. But also strategy games like Mario Rabbids are great because there's basic math mixed in with probability and action. Also games like Brother: A tale of two sons (which you can play with him) can go a long way to developing more complex feelings of empathy which might help him in the long run in regards to games that are just mindlessly super bloody violent. Psychonaut 2 is another great one, lots to talk about there and there's some action but it's never bloody.