Try these Strike Up the Fun - Bowling - Birthday Party or Baby Shower Party Scratch Off Cards party game ideas: SIMPLE: Hand a scratch off game card to guests as they arrive. QUICK: Set a scratch off game card at each spot at the tables so guests can play as they enjoy the meal. FAVORITE: Hand out individual scratch off cards as mini prizes during longer games, such as gift bingo. Have everyone scratch at the same time and the winners get a grand prize.