Mud
Mud “Mud was originally an acronym for multi-user dungeon, later also used for multi-user dimension and multi-user domain. Muds are text-based virtual worlds, the precursors of MMOs.” References Sheldon, Lee (2012) The Multiplayer Classroom: Designing Coursebook as a Game. Boston, MA: Cengage Learning. Author [yadawiki link=”Lucas” show=”Lucas”]