I came out to my parents today at age 12. They wanted to know who my crush was, and we played "20 crush-tions" to find out. They only asked if it was a girl or a boy at question 19, and before that it was so funny because they kept guessing random boys names! It went very well, but they were surprised!
Honestly that sounds like the dream. Fun, creative, and they were supportive. So excited that it went well for you