Glow-in-the Dark Sex! Card Game plays the same way as the Sex! Card game. There are three different games you can play that all result in building a fantasy of five Sex! cards. Then the couple acts out the positions in the order; red, yellow, green, blue and then purple. What's unique and fun about this set is that the sex positions and card background glow in the dark. So you can read the title of the position against the background and see the sex position glowing as well against it's non-glowing white back ground. Includes: 40 cards and rules.