If you have been noticing that your kid has grown a little and no longer continues rough plays and games until they start hurting them or someone else, then it's a sign of behavioral change in your kid. He now knows when to stop in a situation like this and no longer aligned to inflict pain to anybody or to him either.
What you need to know
This means your kid now understands how it feels to be in pain and how they can avoid bringing pain to someone. Be with your child and nurture this development of emotions in him with love. Though he might not understand the importance of his behavior fully now, it will definitely help him become a compassionate and caring individual when he grows up.