The Arcology Project decision now starts a situation for the planet to transform the planet into an Ecumenopolis, so you can continue creating buildings on your planet while it transforms just like Machine or Hive Worlds.



The cost for enacting the project is reduced from 20k Minerals and 200 Influence to 8k Minerals and 200 Influence. The cost difference is made up with a situation upkeep costs.

• Standard Deadlines: Finishes in 10 years if used the whole time
  
• Accelerated Deadlines: Finishes in 7 years if used the whole time
  
• Extreme Deadlines: Finishes in 5 years if used the whole time
  

*See images for upkeep costs



Most of the situation choices are tied to your Ethic, Civics, and Origins selections!

Note: Empire Wide bonuses are only applied once

The Research / Education options for Technology Institutes, Military Academies, and Economic Universities (see image 14) are limited based on the Leaders on your council instead of Ethic, Civics, and Origins. You need 2+ associated leaders on your council to prompt the option (Ruler does not count).

Ascension Cities are not shown in the images above as there is too much variation. They essentially give you an extra ascension building, including all its bonuses, as a Planetary Deposit.

• Cybernetic gets an additional Augmentation Center.
  
• Psionic gets an additional Covenant Building.
  
• Biomorphosis gets an additional Genomic Research Lab.
  
• Synthetic gets an Identity Complex.
  
• Individual Machines don't have any buildings so they currently get nothing :(. This may change if a better idea comes along later.
  

Not compatible with other mods that change the Arcology Project decision

ECS is fully compatible with the mods listed below; load ECS below the mods listed here:
Real Space - New Arcologies

ECS is likely compatible with the mods listed below:
City World Flavour: Not fully tested, but I haven't seen any issues so far




Arcology Project Decision - changes effect to trigger the situation
Restore Ecumenopolis Decision - changes effect to trigger the situation
Orbital Ring Modules - added effects from the final decision in the situation to the modules.



I may convert Hive and Machine worlds to situations as well. I need to figure out how I want to deal with the costs and time given that terraforming bonuses can change those, and I need to come up with more ideas for situation options and stages.