The game is entirely text based, with the player entering commands such as "north" or "kick machine" in order to progress.

In the story included with the game, the player takes the role as a First Under-secretary to the Ambassador for an organisation called Corps Diplomatique Terrestrienne (CDT).

Sent by Mr. Magnan to the mysterious country Aldebaran III, the player's mission to prevent up uprising against Terran nationals in a limited time.

Langston rewrote the game in C in 1974 while at Harvard University and released it to other users of the mainframe system.

The 1980 source code has since been uploaded to GitHub, with adjustments made by Langston and others to make it run on non-unix systems.