The company also gained fame for its inclusion of “feelies,” small tangible items directly related to the game. The feelies for Infocom's The Hitchhiker's Guide to the Galaxy (1984), for example, included papers representing “Destruction Orders for Your Home and Planet,” an empty bag representing “Microscopic Space Fleet,” and a “Don't Panic” button, among other items.
2017, Andrew Williams, History of Digital Games: Developments in Art, Design and Interaction, CRC Press