pedit5, alternately called The Dungeon, is a 1975 dungeon crawl role-playing video game developed for the University of Illinois Urbana-Champaign's PLATO computer network by Rusty Rutherford. In it, the player controls a character exploring a fixed, single-level dungeon containing randomly-generated monster encounters and treasure. When they encounter a monster, they can fight the monster with a weapon or spells, or attempt to flee. Characters can be saved between sessions. Rutherford developed the game over four to six weeks in late 1975 as a computerized take on the Dungeons & Dragons role-playing game; it was named pedit5 as it was stored in the fifth "pedit" slot his school group had available. It is considered to be the first example of a dungeon crawl video game and one of the first computer role-playing games. An improved version was later created on the PLATO network as orthanc. Gameplay pedit5 is a dungeon crawl role-playing video game, in which the player guides a character who wanders a single-level dungeon accumulating treasure and killing monsters. When a player encounters a monster, they can use one of several spells. Characters can be saved from one play session to the next. The dungeon is rendered in a two-dimensional overhead view using on-screen character graphics, and controlled via keyboard commands. The dungeon has a fixed layout, but the monster encounters and treasure are randomly generated. They are generated whenever a new character was created, and saved with the character. When the player encounters a monster, they can choose to fight, cast a spell, or run; if the player does not immediately defeat or flee the monster, the player-character and monster fight to the death in a battle controlled by the game without further player input. Development The game was developed by Rusty Rutherford over four to six weeks in late 1975 for the University of Illinois Urbana-Champaign's PLATO computer network, which by the 1970s supported several thousand graphical terminals distributed worldwide, running processes on nearly a dozen different networked mainframe computers. Rutherford had been playing the role-playing game Dungeons & Dragons since earlier in the year, and wanted to create a video game based on the concept. He knew of another game based on the same concept that was under development in the PLATO system, under the title dnd, but as it had not yet been finished he wanted to start on his own version. As the dnd