Children can get engrossed in YouTube and computer games. Advice is to restrict their time on them. If they aren't happy with this what I do is sit beside my child and talk about what is happening in front of you.
You will find lots of communication opportunities. For example you could practice asking What, Who, Why and Where questions. Or you can solely listen to them and gift them with 10 minutes of your uninterrupted time. These are times you will always cherish and look back on and your child will always remember this too. This is fantastic practice for them to tell a story.
Minecraft is similar to Lego and it's amazing what you can learn from your children. It's a totally different upbringing to the 1980s.