The Nexii are a small group of modders brought together by the game Nexus:The Jupiter Incident to further develop mods for the great game. As time goes on, we hope to make this the number one source for all your Nexus:TJI requirements.
This is not how actual missions are made, at least not in the whole, but a small part, shallow if you may. But still indespensable for making a good mission.