No, adults don't need games. They'll talk and socialize. I've been to a lot of kid's parties and there haven't been games for the adults. If you were having an outdoor party, I could see maybe setting up cornhole/bags if you have a set and your friends like to play but otherwise, totally not necessary.
No games necessary but I do love lawn games so if anything maybe pull out ladder golf/corn bags/bocce ball and just put on the side as a visible option but nothing organized.
Re: First birthday Party question
~Benjamin Franklin
DS dx with celiac disease 5/28/10
Agreed.
In our case, alcohol is the only thing the grown ups NEED.
Totally, I would feel really weird if I went to a baby/kid's party and the host had organized a game for me