Games help!

I have everything for my daughter's first Birthday ready to roll. The only thing I can't get is a game or activity for the older kids coming. There will be about 9 in total kids coming ranging from 5 to 9 years old. There will also be a few babies my daughter's age, but they don't need games. I need a game that's physically able to accommodate both five year olds and almost 10 year olds as well as not being crazy expensive her over-the-top or needing a ton of adult supervision as her parties only 2 and 1/2 hours long anyway. We're having an ice cream bar and a selfie area and other than that it's just going to be very casual and simple.