• Four decades of committed love is an achievement worth acknowledging and celebrating. Host a party and invite friends and family to spending the day or evening celebrating romantic love. Use creativity and a sense of humor to create entertaining, engaging and inspiring games for a 40th wedding anniversary celebration.
  
  

Couple's Trivia

• Test the knowledge of party guests with trivia questions about highlights or just interesting things about the anniversary couple's marriage. For example, ask how many international trips the couple has taken or how many pets they have owned. Pepper questions throughout the evening. Give each guest 40 seconds to answer a question. Assign point values to the questions based on difficulty. Keep score and at the end of the event, give the person with the highest score a prize. The 40th anniversary is associated with the ruby gemstone, according to Happy-Anniversary.com. Create a prize related to rubies. For a luxurious prize, select a pair of ruby earrings or a ruby-studded bracelet. As an affordable alternative, select a moderately priced gift such a framed photograph of you and your spouse in a ruby-colored container.
  
  

Crossword Puzzle

• Create a personalized crossword puzzle with questions related to basic, fun or interesting aspects of the couple's 40-year marriage. Include clues for basic information such as middle names but also interesting information such as where the couple met or where they went on their first date. Offer a prize to those who complete the puzzle. Print the crossword puzzle on ruby-colored paper. Further reinforce the 40th anniversary theme by offering nasturtium flowers or seeds as prizes. Nasturtium flowers are associated with a 40th wedding anniversary, according to AnniversaryIdeas.com.
  
  

Marriage Game

• Typical newlywed games involve newly married couples answering fun and perhaps embarrassing questions about their spouses. During a 40th wedding anniversary celebration, set aside 40 minutes for a game for married couples. Select three married couples who represent varying lengths of marriage. IDo!TakeTwo.com suggests incorporating different generations into anniversary celebrations. Include the anniversary couple among contestants or ask them to serve as the hosts. Ask each couple interesting questions that pertain to married life. Assign points to correct answers according to the difficulty of the question. Offer prizes wrapped in ruby red paper to the winners.