Interstellar Space: Genesis
Released Jul 2019
Interstellar Space: Genesis is a turn-based space 4X strategy game in which you attempt to build a thriving galactic empire. Discover mysteries among the stars, colonize worlds, and engage enemies in tactical turn-based combat on your journey to becoming the ruler of the galaxy!
84% positive · 846 reviews
Not yet
Released, but content still planned
High confidence
Content Planned
Not yet
Released, but content still planned
High confidence
Content Planned
Where to buy
Steam $29.99 Green Man Gaming Steam key $29.99
Can't confirm — worth a look
We couldn't confirm these stores carry this game.
IndieGala Steam key Search Prices in USD, as listed by each store.
Buying through an affiliate store helps support the site
Evaluation
Interstellar Space: Genesis launched on July 25, 2019 and has been continuously developed since. The game has received two paid expansions — Natural Law (November 18, 2020) and Evolving Empires (May 25, 2022) — along with a cosmetic Terrains Pack (January 30, 2024), and a series of major free updates including versions 1.6 (November 2023), 1.6.3 (May 2025), and 1.6.4 (September 2025).
A third paid expansion is officially confirmed and in active development. On December 29, 2025, the developer published a dev diary announcing Expansion III is planned for 2026, describing it as a major new chapter introducing expanded lore, new strategic systems and technology, and new epic content. A free update is also planned to ship alongside it.
Most recently, on July 7, 2026, the developer published Dev Diary 27 providing a progress update: the majority of the work on Expansion III is now complete, and the team is in the final stretch of integrating, refining, and testing the new content. The developer confirmed the expansion remains on track for a 2026 release, likely toward the end of the year, with a formal marketing campaign to begin as the release date approaches.
The store description also explicitly states the game is "in continuous active development since launch," consistent with the long history of sustained updates, expansions, and the confirmed upcoming release.
Evidence
Dev Diary 27 confirms Expansion III is on track for a late 2026 release. The majority of development work is complete and the team is now in the final integration, refinement, and testing phase. A formal marketing campaign will begin closer to release.
Dev Diary 26 officially announces Expansion III for 2026, describing it as a major new chapter with expanded lore, new strategic systems and technology, and new epic content. A free update will also ship alongside the expansion.
Content
4 of 4 released · no outstanding content
Media
Details
Developer
Publisher
Praxis Games
Achievements
65
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player
About this game
Prepare to go interstellar and build a prosperous galactic empire. Explore other star systems remotely or by sending survey ships, and discover treasures and mysteries among the stars. Colonize new worlds, advance your space-faring society, both technologically and culturally, and engage enemies diplomatically or in tactical turn-based combat on your journey to becoming the ruler of the galaxy!
Interstellar Space: Genesis takes classic turn-based space 4X strategy mechanics, adds in a few twists of its own, and tosses them in with several brand-new mechanics to create a truly unique entry into the genre. It also aims to provide a lack of burdensome micromanagement and an emphasis on the best aspects of classic 4X space strategy games with the powerful "just one more turn" factor.
The game is in continuous active development since launch. Part of it includes free content updates, with free new features, improvements, bug fixes and balance changes for everyone. So, you can continue to enhance your gaming experience over time. Prepare yourself to embark on a journey of discovery of epic proportions!
A word on our company and our values. Praxis Games was born from the passion of playing video games for the PC, strategy games in particular. Single-player experiences at heart. We exist to please the fans. To make the games you want to play, again and again.
We believe that games should serve three purposes: to entertain, to inspire and to help educate. In that regard, our games are crafted to be a lot of fun, in order to make you lose the track of time. They will inspire you by putting you in command and in control of something bigger than yourself. And finally, our games are deep, rich in detail and made as accurate as possible because we want to help challenge your critical thinking skills, stimulate your imagination and guide you on a voyage of discovery.
Interstellar Space: Genesis takes classic turn-based space 4X strategy mechanics, adds in a few twists of its own, and tosses them in with several brand-new mechanics to create a truly unique entry into the genre. It also aims to provide a lack of burdensome micromanagement and an emphasis on the best aspects of classic 4X space strategy games with the powerful "just one more turn" factor.
The game is in continuous active development since launch. Part of it includes free content updates, with free new features, improvements, bug fixes and balance changes for everyone. So, you can continue to enhance your gaming experience over time. Prepare yourself to embark on a journey of discovery of epic proportions!
Construct your galaxy.
- Play as one of six distinct races, each with their own abilities, advantages, and backgrounds.
- Design custom races with their own ideal worlds, racial traits, and unique game-changing abilities.
- Craft your own experience and set your own pace using customized difficulty settings, per empire sliders, victory conditions, and galaxy size settings.
- Navigate through randomized tech and culture trees or follow the galaxy's natural order.
Discover the galaxy's secrets.
- Reveal mysteries throughout the game via unique exploration mechanics and events.
- Detect black holes, neutron stars, planets and other systems using remote exploration technology.
- Unearth ancient ruins to discover treasures, technologies or talented individuals.
- Experience the freedom of interstellar travel that is limited only by your empire's supply chain.
Broaden your horizons.
- Establish and conquer settlements and outposts to expand your empire.
- Find ideal worlds or adapt them to your race using terraforming and planetary engineering projects.
- Develop your colonies and behold their animated environments and handcrafted worlds.
- Exploit asteroids and strategic resources for production, profit, or research.
Outclass your foes.
- Engineer custom ships capable of crushing your enemies in turn-based tactical combat.
- Engage in diplomacy to pursue trade, sign treaties, forge alliances or conduct military negotiations.
- Destroy enemy worlds using powerful bombs or send in your assault troops to take what is yours.
- Deploy leaders undercover to learn secrets, destroy facilities or locate potential defectors in espionage missions.
Advance beyond your ancestors.
- Oversee unique leaders each with personalities, desires, traits, skills and opinions that truly matter.
- Evolve your race's culture and celebrate their talents and specializations.
- Reduce burdensome micromanagement through refined implementations of classic mechanics.
- Make compelling decisions that define your empire's destiny.
PRAXIS GAMES
A word on our company and our values. Praxis Games was born from the passion of playing video games for the PC, strategy games in particular. Single-player experiences at heart. We exist to please the fans. To make the games you want to play, again and again.
We believe that games should serve three purposes: to entertain, to inspire and to help educate. In that regard, our games are crafted to be a lot of fun, in order to make you lose the track of time. They will inspire you by putting you in command and in control of something bigger than yourself. And finally, our games are deep, rich in detail and made as accurate as possible because we want to help challenge your critical thinking skills, stimulate your imagination and guide you on a voyage of discovery.
Last evaluated Aug 27, 2026
Something about this evaluation looks wrong Report illegal or harmful content