A Party In Need

My party is in 1 week, im having 15 girls and 15 guys i want there to be heaps of fun my parents will come and check on us every 1 hour so any games are allright. Im turning 14 so as u can guess ima growing teenager and i do have needs too... As u can guess girls. Its a dancing n chilling party but i just wanted some games that we can play in case things get boring... The guys are sleeping ova so i want to have some fun pranks to play on people and other people in our nighborhood too. Please help