Galactic Civilizations IV: Supernova is a 4X turn-based strategy game set in the 24th century where you take on the role of leading a spacefaring civilization that has just developed faster-than-light (FTL) travel.

You begin the game with only your home planet and must research new technologies, explore the known galaxy, and colonize new worlds while keeping your people at home happy. At the same time, you will engage in trade, diplomacy, intrigue and war with other alien civilizations. Thanks to the invention of hyperdrive, your people are now ready to discover new worlds, encounter alien civilizations, and learn about the dark history that encompasses them all.



Galactic Civilizations IV: Supernova gives you an entire galaxy to explore and customize. Using cutting-edge AI technology, you will be able to create entire civilizations that both look and feel unique just by entering a few lines of text. The AI will generate custom lore, diplomatic dialogues, starship choices, and ambassador images, leaving you with a one-of-a-kind civilization to play as or against.

Each civilization has a unique story to tell and is powered by a sophisticated and nuanced AI entity with its own ambitions and goals. Our unrivaled ship design lets you stay ahead in an endless arms race by designing custom starships to counter your adversaries’ strengths.

Lead your civilization to prosperity and answer the age-old question: How Will You Rule Your Galaxy?

Create unique civilizations

Describe your civilization’s attributes – from their likes and dislikes to their goals and ambitions – using a few short lines. Then, sit back and let our AI do the rest of the work: it will generate unique lore, diplomatic dialogues, starship choices, and ambassador images.

Explore a vast galaxy

Seek out new star systems and play on multiple maps of various sizes, all interconnected via subspace streams.

Experience a new game every time

Never the same game twice, procedurally generated galaxies and a vast library of galactic events make it so that each playthrough feels exciting and unique.

Encounter new alien civilizations

It's a big universe out there – you never know who you might run into. Meet dozens of unique alien leaders and engage in diplomacy, trade, and war with their civilizations.

Colonize new worlds

Assign leaders to manage your core worlds while smaller worlds feed resources into them to create a bustling empire.

Research technological breakthroughs

Research breakthrough technologies that are significantly cheaper for your civilization than others that might require more time and a deeper cost.

Engage enemies in ship battles

Enjoy enhanced control over your fleet’s performance by utilizing the new Starship classes system. Each type of vessel has unique priorities during a battle, which means that building a diverse fleet will give you an edge in combat.

Formulate government policies

Select from a huge range of policies – from coerced research all the way to mandatory conscription - to influence how your civilization functions.

Terrorize the galaxy

Originally conceived and constructed by the Dread Lords, Terror Stars can wipe out entire stars and all the planets and ships within their orbit with a single shot.

Exercise your control

Use the Control resource to issue executive orders for immediate action.

Choose your destiny

Add traits to your civilization using a sophisticated ideology system, earning points in particular ideologies based on how you handle certain events.