Since late 17th century terran history registered strange symbols that appeared in fields of Earth connected with aerial phenomenon. These symbols were based on ancient, sacred geometries that embodied a comprehensive knowledge of proportion and ratio that were part of terran culture. Later they were believed to originate from landings of alien crafts.
Around the time of the Great War on the edge of known space, these key shapes started appearing on desolate space platforms. Different terran factions dispatched teams of scientists in an attempt to learn whether the shapes were simple plasma induced phenomenon or intelligently controlled formations with universal teachings.
Once there, the groups of scientists were instructed to "convince" the other teams to leave their research to be the one team that solves the enigma.
- 1998-08-21. Enigma. StarCraft Compendium Map Archives. Accessed 2022-01-17.