Bonfire Party Ideas for 15 year olds?

My mom agreed to letting me have a bonfire party in my backyard this summer and I’m super excited! I don’t know how many people I’ll invite, but if i push it to the limit I may talk her into letting me invite 25 if i get lucky. The minimum would be 10 people. We are all 15, and there will be boys and girls.
There will be no alcohol or drug use, I strictly forbid it at my house, and my mom will be there.
I want to use my iPod speaker to have background music, and I’ll probably have it pretty loud until about 9:00. Do you think this is reasonable? Or should I turn it down earlier than that?
What are some good games for us to play? Any tips for bonfire safety?
I am thinking of having it go from about 6:00 to 10:00. Is that long enough? I don’t want to serve a meal but I want to have snacks. S’mores obviously, but what should I have besides that.
I really really want this party to be awesome! Just one night of fun with my favorite people. I don’t want anything to ruin it.