Spud Dastardly presents the biggest Master of Orion: Conquer the Stars mod in the galaxy! This mod is massive overhaul of the gameplay experience. It's effectively a full expansion pack for the game. It includes a total rebalance of every aspect of gamepla...

(This is the full version) Compatible with 5X v4.4.1 This mod adds over 100 new specials that can appear on planets in game! Massive planets can be found now too, at a low chance and only in certain orbits. Between the Advanced Resource Extraction tech fie...

This mod splits the tech tree into 8 branches: Construction, Power, Sociology, Chemistry, Computers, Biology, Fields, and Physics. Each tech is reclassified into one of these branches primarily using MoO2's tech tree as a guide for which techs should go in...

This improves the pollution cleanup rate of all pollution management structures. The improvements are as follows: Atmosphere Renewer: 5 => 10; Toxic Processor: 5 => 15; Pollution Processor: 15 => 30; Core Waste Dump: 100 => 1000; There should be no conflic...

VERSION UCP 6.4b To make this mod actually work you MUST follow the included “ReadMe.txt” for the install instructions. This must be done everytime you want to upgrade to the new version! Version 6.4+ of UCP requires a new game, older saves will not work. ...

This mod is for people using 5X - The Ultimate Balance Mod with WhatIsSol's Unofficial Code Patch. The base 5X mod is designed to run without UCP. The purpose of this mod is to re-optimize 5X to run with UCP and to take advantage of additional modding feat...

Minor civilizations are sometimes found on planets that do not correspond to them, for example: - Aquatic Akirians can be on Arid planet; - The Eldritch, who are described as “living in makeshifts tunnels under the surface of the planet”, or the Nyemorian ...