Drink Fun 21 Card Game from Little Genie. Drink Fun 21 - Adult Drinking and Party Game BG.075. Drink Fun 21 is an Adult card game. The game play is similar to blackjack with an additional 4 aces so chances of getting blackjack increase. Each card has a drinking activity or trivia to perform throughout game play. Drink Fun 21 can be played with two or more people. Adult players 2 to 5. Categories: Party Games, Gifts, Supplies, X-Rated Adult Games, Books, Adult Games and Music, Adult Party Games. Little Genie - Adult Drinking Game. Adults only please.