Cosmo's Bachelorette Party Games. Her last night as a single lady is sure to be the wildest with this collection of risque and hilarious Bachelorette Party games from Cosmo! Gather the girls, whip up some cocktails and get ready to play. Choose from 25 wild and outrageous cards where you'll reveal naughty secrets, get your hands dirty with penis-themes games and compete in classic party games with a cheeky twist! Whether you're having a girl's night in or hitting the town, these 25 entertaining and hilarious games will have you going until day break.