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Fortified Space

Game overview

Fortified Space

Seize control of hostile planets in this nostalgic space sim and tower defense hybrid inspired by classic Flash games. Fight for orbital supremacy in starship combat, then land on the surface to build bases, deploy defenses, and shred enemies. Relax aboard your ship with farming, mining, and more.

Action Strategy Early Access
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About this game Read the full description

You are the captain of a Unified Earth Forces starship, leading daring combat missions deep into enemy territory.  Fight in space and on the ground as you spearhead the assault, establish vital footholds, and pave the way for Marine landing forces. Engage in ship-to-ship combat, build bases on planet surfaces, and shred enemies with turrets and your assault rifle alike.  Turn the tide in a war for humanity's survival.

Experience Intense Space Battles

Test your skills as a starship captain as you evade hostile fire, strafe alien cruisers, and escort allied ships during fleet battles.  Blast incoming missiles with your ship's point-defense turret and strike hard with your railguns.  Dominate the fight and secure victory.

Build and Defend Planetary Fortifications

Think strategically as you deploy barriers, turrets, gates, and barbed wire on hostile planets to safeguard against relentless waves of enemies.  Or, if it's been a long day, maybe you can just build a wall of turrets.  The enemy will get the message.  Each planet has unique characteristics, but the objective is almost always the same: create a secure zone to allow our Marines to land safely.  After reinforcements arrive and you've succeeded in your mission, you can toggle Endless Mode to activate nonstop enemy attacks. Keep coming back to the planet to work on your base and fight off this relentless assault!

Explore Your Ship - Farm, Mine, Read, and Relax

Fortified Space offers more than just adrenaline-pumping combat.  Take a break from the fight to walk around your ship, talk to your crew, and read the news articles that update after each mission.  Gather materials for your next mission through asteroid mining, hydroponic farming, and composting.  You can even kick around a soccer ball or play a target-shooting arcade game.  

Explore Earth

Ready for shore leave?  Fly to Earth and explore the civic and cultural institutions in humanity's capital.  Don't forget to visit the Library of Earth to read about the Interplanetary War, Unified Earth Forces ships, and other interesting topics. Earth will be an area for continued growth during Early Access.

Report to your ship and prepare for launch.

Good hunting!

Special thanks to Richard Wei, MVP (Most Valuable Playtester)

Nightsail Game Studios logo by Alexis Paneda and Gian Paneda

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The In-Game News Update - Regular Update v0.1.6 Fortified Space Earns Spot In "20 Best Tower Defense Games of 2026" - Akurat.co The Combat Simulation Update - Regular Update v0.1.5
System requirements Windows

Windows

Minimum

Minimum:
  • OS: Microsoft Windows 10
  • Processor: AMD Ryzen 7 4700U
  • Memory: 6 GB RAM
  • Graphics: AMD Radeon
  • DirectX: Version 12
  • Storage: 5 GB available space

Recommended

Recommended:
  • OS: Microsoft Windows 10
  • Processor: Intel Core i7 9750H
  • Memory: 16 GB RAM
  • Graphics: NVIDIA GeForce RTX 2060
  • DirectX: Version 12
  • Storage: 5 GB available space
Game details Languages, features & support
Publisher
Nightsail Game Studios
Brazilian rating
10
Steam Germany rating
12
Achievements
20
Features
Single-player, Steam Achievements, Camera Comfort, Adjustable Difficulty, Steam Cloud, Family Sharing
Languages
English*
*languages with full audio support
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Game Insights

Buy Verdict

Wait — $3.99.

Wait for upcoming sale in ~13 days for potentially better pricing.

▬ ~13 days until next sale

Update Momentum

Infrequent Updates — 0 patches in last 30 days.

1 patches and 1 news items in last 180 days. Latest patch effect size: 0.00.

▼ No recent patches

Value Score

Great Value — 100th percentile.

Price-to-player ratio ranks in the 100th percentile.

▲ Market pricing tier

Genre Benchmarks

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Developer Analytics

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Frequently Asked Questions

Is Fortified Space worth buying right now?
Wait — $3.99. Wait for upcoming sale in ~13 days for potentially better pricing.
When does Fortified Space go on sale?
Wait for upcoming sale in ~13 days for potentially better pricing.
Is Fortified Space still getting updates?
Infrequent Updates — 0 patches in last 30 days. 1 patches and 1 news items in last 180 days. Latest patch effect size: 0.00.
Is Fortified Space free to play?
Fortified Space costs $3.99 on Steam.
What genre is Fortified Space?
Fortified Space is a Action, Strategy, Early Access game.
Who developed Fortified Space?
Fortified Space was developed by Nightsail Game Studios and published by Nightsail Game Studios.
What platforms does Fortified Space support?
Available on Steam for Windows.