Fight back against humanity's enemies in this planet-hopping tower defense adventure. Fly to alien planets, destroy their defenses, and build fortified spaceports. Use a variety of structures to create a secure zone, then hunker down as enemies attack. Join the fight as fleets clash in open space.
Gameplay | Trailer
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Coming Soon To Early Access

The developers of this game intend to release as a work in progress, developing with the feedback of players.

Note: Games in Early Access are not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“We have a lot of plans for features and improvements that we might want to add, but the best source of ideas is real players like you. Tell us your thoughts, give us your suggestions, and help us get to a better game!”

Approximately how long will this game be in Early Access?

“6 months - 1 year.”

How is the full version planned to differ from the Early Access version?

“In the full version, we hope to have a longer campaign, greater mission variety, improved art, and a lot more fun things to do. We believe this game is a good foundation for lots of growth.”

What is the current state of the Early Access version?

“This is currently a feature-complete game, playable from start to finish! You can refer to the "About This" section for more information about the features already in the game. Everything described in that section has been fully implemented. During the Early Access period, we intend to fix bugs, improve the graphics where we can, and explore adding new features beyond what is already described on this page. Your feedback will be crucial in this process.”

Will the game be priced differently during and after Early Access?

“We plan to gradually raise the price as we ship new content and features.”

How are you planning on involving the Community in your development process?

“We will read every single message on all platforms and add all suggestions to our list of potential improvements. You can be sure that whether we implement your ideas or not, they would have been fully considered. The most direct way to contact us would be through our email address, but you can also send messages through the Nightsail Game Studios pages on Facebook and Instagram.”
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This game is not yet available on Steam

Planned Release Date: 2025

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Development Update

We are excited to share that Fortified Space entered closed beta on June 8, 2025!  We have been getting a lot of great input from players and look forward to sharing the game with all of you soon.

About This Game

It has been two decades since the enemy first swept into the Solar System and attacked Earth. Humanity's forces put up a desperate fight for survival and, at great cost, slowed the enemy advance to a stalemate. Now, the heaviest fighting rages on continuously at the edges of the Solar System, far from the inner planets where a semblance of peace has returned.

It is against this backdrop that Earth intelligence discovered the locations of the enemy's homeworld and other planets within its wide-ranging domain. Hoping to force an enemy withdrawal and relieve pressure from Earth's defensive forces, the military formed a naval strike group to launch a surprise attack directly into their territory.

You are the captain of a Unified Earth Forces starship participating in the counter-offensive. Your mission is to operate ahead of the main fleet and to create footholds for our landing forces. Fly your ship to enemy planets, destroy their orbital defenses, and land on the surface to build fortified spaceports. Build a variety of emplacements to secure the area against waves of enemies. Of course, you can always use your trusty assault rifle in a pinch.

Build Planetary Fortifications

Think strategically as you set up barriers, turrets, gates, or barbed wire on the planet.  Or, if it's been a long day, maybe you can just build a wall of turrets.  The enemy will get the message.  Create a secure zone to allow our main landing forces to deploy.

Engage in Ship-to-Ship Combat

Test your skills as a starship captain as you strafe alien space stations and escort ships during fleet battles.  Defend yourself with the ship's point-defense turret and strike hard with your railguns.


Relax and Enjoy Down Time

Get up out of your chair, walk around your ship, talk to your crew, and read the news.  Explore the civic and cultural institutions in Earth's capital city.  Don't forget to visit the Library of Earth.


Good hunting!

Nightsail Game Studios

System Requirements

    Minimum:
    • OS: Windows 10
    • Processor: AMD Ryzen 7 4700U
    • Memory: 6 GB RAM
    • Graphics: AMD Radeon
    • DirectX: Version 12
    • Storage: 500 MB available space
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