As thread says dd1 is having 3 friends over for her bday on saturday and I'm not sure what games will work well with only 4 children. Any ideas and tips on how to cope with four 5 year olds over night??!!!!
You can do musical bumps (just give a sticker to whoever sits down first, rather than someone being out each time). Also face painting is always fun (you could let them loose with their own face paints?) Cake decorating - make a load of fairy cakes and provide lots of different toppings and small dishes of glace icing.
Making stuff, eg get a beading kit so they can make necklaces - also agree with the cakes. You could also have them make their own birthday tea eg by helping you make pizzas and choosing their toppings (or just buy ready-made margherita pizzas and choice of toppings).