In this lesson, students build on the encryption and decryption programs they have created throughout the unit to design and build a digital escape room in Scratch. Students discover the concept of playability and examine what makes games clear, fair, and enjoyable to play. They are introduced to user experience (UX) design as a tool for shaping how users interact with a digital system. Students then plan the structure and flow of their escape rooms and exchange feedback with a partner. Finally, they implement their designs in Scratch to create a functional digital escape room that demonstrates their design choices and intended program flow.