Hello everyone,

We are excited to share with you a preview of version 4.0. This is a substantial upgrade to the game that introduces the "Colonial Charter" government type, which offers flexible ways to grow your civilization. We have also added Political Parties, each with its own agenda, and Institutions to expand your power. The notification system has received a significant overhaul to make it more user-friendly, and we've added a mini-map so you can better see what's happening around you. Speaking of maps, we have also added a long-requested feature – a map editor! You can now design the perfect galaxy for your society to thrive. Finally, we've made significant improvements to the AI and diplomacy systems. Read below for more information.

Steam 

• Select Galactic Civilizations IV from your Steam Library list. 

• Right-click and select "Properties." 

• Select the BETAS tab. 

• From the dropdown, select "Insider" and click Close. (if you don't see this option, restart Steam.) 

Steam should pull down the changed files; if you ever want to return, do the same as above but select "default." 

Epic 

• Open the Epic Launcher 

• Select "Galactic Civilizations IV: Supernova - Insider's Edition" 

• Install and play! 

Please note: The opt-in (Insider Build) is an early preview of the next update, and you might experience bugs or other issues. 

Summary

Colonial Charter

Every civilization has access to the Colonial Charter government type that gives you flexible policy slots instead of locking you into a single strategy. Retune your policies as your empire grows and your priorities shift. Also unlocks “Institutions” and “Political Parties.”

Map Editor

Stop rolling the dice on random galaxies. Lay out the stars, clusters and homeworlds yourself. Open the editor and place stars, clusters anomalies, and homeworlds in the galaxy. Jump straight into a game on your map or hand it to someone else.

Custom Maps

Start a game on any hand-built galaxy instead of a random one, and trade maps with the community.

Updated Turn Notifications

Everything that needs you each turn shows up right on the main screen — no digging through a log. End your turn and the events that matter surface directly in the lower right corner. Click one to jump straight to the planet, ship, or decision it's about.

Mini Map

A strategic read on the whole galaxy, always in the sidebar. Zoom, pan, and jump the main view without losing your place.

Political Parties

Your civilization isn't a monolith. Internal parties pull in different directions. Win their favor and they back you or ignore them at your peril. Parties form inside your civilization, each with its own agenda. Your decisions will please some parties and anger others. If you keep a party happy and you earn its support and bonuses; there are consequences to alienating them.

Institutions

Assign your leaders to run Institutions that boost your civilization's science, manufacturing, military and more. Stronger leaders produce bigger bonuses, so it matters who you slot where. Reassign leaders as your strategy shifts to steer the bonuses that matter most.

AI Improvements

Lots of AI upgrades across the board: expansion, war, diplomacy and government play all got smarter opponents behind them.

Diplomacy & Trade

A redesigned diplomacy system built for making better deals.

July 16th, 2026 Change Log

Colonial Charter

You start the game building a “Colonial Leadership Council” project on your homeworld. When its complete, you unlock the government button and automatically start with the “Colonial Charter” government. The Colonial Charter now unlocks the following:

• Policies: The existing Policy system is now a feature of the Colonial Charter Government.

• Institutions: You can assign leaders to different “Institutions,” which provide tiered buffs over time. Drag available leaders to Institutions to assign them. The number of turns it takes to level up an institution is based on the assigned leaders' stats. For example, Intelligence for The Academy (research) Institution.

• Parties: Citizens belong to one of four different parties. Parties provide bonuses based the average approval rating of citizens in the party.

Map Editor

• Map Editor is now accessible from the main menu.

• Choose from one of several galaxy templates to get started.

• Place stars, clusters anomalies, and homeworlds in the galaxy; draw Hyperlanes on the map

• Load custom maps when setting up a new game.

• New maps are sharable with other players

Balance & Gameplay

• AI opponents no longer surrender prematurely, better deal valuation around trade.

• New Broadcast Beacon Ship Component: deployed sensor drones project map influence over time.

• Cap Insight (discounted random research) to 3

• “Recycling center” pollution effect improved from 5% to 8%.

• War Aims updates

  • forced-ceasefire events are now optional (reject choice added) with a raised cooldown, instead of forcing surrender.\

  • New War Fatigue approval penalty: past a war's max duration, aggressor's citizens lose 1%/month approval, target's lose 0.5%/month, capped at -50%.

  • Wars now run much longer before fatigue starts.

  • New "X declared war on Y" line on war aims tooltip.

Performance / Stability

• Fixed many crash/assert guards across leader assignment, race-trait lookups, and government refresh paths

UI

• Polished Colony Summary window.

• Updated the Fleet/Ship Context to make the special actions more usable.

• Refactored the Leader Cards

• Fixed a broken hot spot in the first tutorial

• Fix duplicate defended shield on Fleet Context.

• Turn Notification redesigned

• Added a mini-map to the information panel in the upper right, along with toggles for different map icons.