I had all 3 of mine sharing a room for about a year. Then Annie wanted her girl space so now it's just the boys. Which reminds me of the first time she went back in there after moving out. She looked around, sniffed, wrinkled her nose and said "it smells like boys in here! Yuck." LOL Anyway.......My boys stay up and play for at least 20 minutes each night. If Torin is really tired he will crash and Logan will stay up and play by himself. My solution - I let them. It is their "brother time", or Logan's alone time, depending. If they get realy noisy or start to trash the room I go in and tell them that's enough and it's time for lights out. It isn't usually a problem. The sweetest part is each night when they decide it's time for sleep and they each get themselves tucked back in and I hear "To-win, I yuv you." "I love you too, Logan." =)