The ImmunoWars STD booster pack is a NSFW expansion that requires the base game to play. This expansion introduces 32 STD-related playing cards featuring ailments like chlamydia, herpes, along with items such as chastity belts and hangovers, adding a spicy twist to the gameplay as well as new pathogens to learn about. It's designed to appeal to students and gamers looking to add a humorous, adult-themed dimension to their game nights, making ImmunoWars even more engaging for those who enjoy a bit of risqu fun. Perfect for those who want to explore the infectious world of STDs in a lighthearted and educational way, this booster pack enhances the strategic depth and enjoyment of the original game.