Ask HN: What age did you introduce your kids to console gaming?

I have a 5 year old kid who loves playing the odd puzzle/logic games on my iPad (thinkrolls) and is already doing lego for kids twice his age. I'm thinking about getting a Nintendo Switch for him to play games such as Yoshi / Captain toad which require some creative puzzle solving to advance levels. However I'm concerned about him being too young and the effect on his brain development. He is a very active and healthy kid. If we got it I'd strictly limit play to a few hours per week.