This set of 102 2.5"x2.5" cards contains all the designs in our Delver (cavern), Trailblazer (dungeons), and Voyager (more dungeons) dice sets. They do match up with 1/4 inch graph paper. Align the cards together to make a dungeon as large as you want! The front design is mirrored on the back for even more combinations! Each card has a prominent number and a smaller letter which allow you to match it up to our dice sets.