Nov 19, 2018 · Is it worth getting a year older without the frosting and candles? We think not. Ask each guest to forego gifts and bring their favorite cake—and then taste them all. (Side note: This may be our favorite adult birthday party idea ever.). Fun And Fabulous Adult Birthday Party Games To Help You Plan The Perfect Party! Adult party games can help you to break the ice with guests, liven up the party a bit, encourage competition, and create some good old-fashioned fun!