They are designed for any card around 2.75” x 4.75” (70x120mm) in size, which is the standard size for Tarot cards and many larger card formatted games. Also, they are perfect for the Magic Description Cards, Combat Description Cards, and Storyteller's decks. We have a list of compatible card games that match the sizes mentioned above on the main Kickstarter page. Look for the link labeled "Compatibility List." There are over 150 listed!