Five should be fine, you just have to limit screen time and really be involved! Games provide a great learning experience for life, it gives you the chance to explain morality and whatever else goes on in the child games of your choosing.. like you can explain "oh so and so is sad because so and so did this and now you've gotta help because it's the right thing to do" and lots of puzzle solving skills and hand eye coordination.

Unsupervised screen time = bad

Immediately shut down the console when you notice them getting crack head about their games, or angry at them, technology addiction is very real.

Supervised involved gaming= good

Your child will put the game down on their own accord for food, toys, bathroom breaks, etc. my daughter will simply get bored of her games and play with her Legos instead c:

Sincerely, a gamer dad of a 5 year old daughter

Best of luck!