Hi, This is a small python mod that I've put together following some discussion on the Éa thread. This module tries to delay the revealing of the full map. Firstly, without Cartography, civilizations have no means of recording information about the land they have discovered. Any revealed terrain, which is no longer visible to a civilization is concealed once more until they have Cartography. Secondly, without mastering longitude, a civilization can not accurately map the oceans nor determine the distance to far off continents. Learning Engineering, Divination or Necromancy technologies provide means to master longitude. Until a civilization can determine longitude then areas (oceans/continents) in which they do not have a city, which have been revealed but are no longer visible, will be concealed once more. The Elohim always remember the location of unique improvements. Other civilizations remember these longer than any other terrain but still will forget their location over time if they do not master the required technologies. This is really a bit of an experiment so all feedback is appreciated: Would you never consider using the module? Does hiding the terrain again add any value to the game? Is the concealing of the terrain just frustrating? Do you make notes for yourself about the important information that has been revealed but will be concealed? Do you adapt your research to prioritise the technologies to allow the map to remain revealed? Credits Spoiler : Pazyryk for promptying the idea. Thanks to The_J, platyping & God-Emperor for responding to my questions on python Thanks to Gingerbreadman and Baldyr for answering questions in their threads before I even think of them. Updated to version 1.1, Changelog Spoiler : Only the first player or a human player will now experience the concealment of previously revealed terrain (AI could not cope with the reconcealment of the terrain). Cartography no longer allows map trading (human player would gain too much from the AI players otherwise).