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Fortified Space

ActionSimulationStrategyPCSoloDemo Live

About this game

Seize control of hostile planets in this nostalgic space sim and tower defense hybrid inspired by classic Flash games.

Install the free Steam demo.

Last checked 9 Nov 2026

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Fortified Space

Seize control of hostile planets in this nostalgic space sim and tower defense hybrid inspired by classic Flash games.

Available on Steam (PC) — Demo Live, checked 9 Nov 2026.

More about Fortified Space

Fortified Space is a space sim and tower defense hybrid where players seize control of hostile planets. As a Unified Earth Forces starship captain, they lead counter-offensive missions into enemy territory, establishing fortified bases on planets to protect Marine landing forces. Core gameplay involves deploying barriers, turrets, and defenses against enemy waves while engaging in space combat with railguns and point-defense turrets. The demo includes a full space-to-ground assault on Forgrit, a desert planet used as an enemy staging ground, followed by a 60-second fleet battle against an incoming enemy fleet. Post-mission, players can explore Earth's capital city, read lore, and engage in activities like asteroid mining and hydroponic farming.

Availability historyPast official availability changes
  • Demo LiveSteam · PC · 17 Sep 2026
  • Demo LiveSteam · PC · 11 Sep 2026