You simply print off the monster alphabet cards found here. Again, I use cardstock for durability. Laminate if you can.
Using a clean flyswatter or two, depending on how many children are playing, call out a letter. The children use the flyswatter (gently) to mash the monster with that letter.
Whoever had the first flyswatter to swat the card keeps it. Play continues until all letters are used. Whoever has the most letters at the end is the winner!
For more games to try at home, check out these previous posts:
Happy learning! --MJ