Astra Sentinel Demo

58KS
Released Jun 17, 2025by Somnambulist Games1 user reviews(100% of 1 Steam reviews)

Astra Sentinel is a real-time strategy game in which you must defend planetary systems from endless hordes of aliens. Reconquer planets, build on their surface and prepare to counterattack. Will you be able to recover the control of the galaxy?

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Astra Sentinel Demo screenshot

About Astra Sentinel Demo

Astra Sentinel is a single-player RTS in which you will be able to test your skills as a strategist and defend humanity from extinction. When you start a game you will have to regain control of the infected planets in the solar system. Once you have colonized a planet, build on its surface by switching from a planetary to a space view without loading screens. Enjoy an epic campaign mode or prove your worth in the infinitely replayable skirmish mode.

This demo contains one skirmish map (not procedural) with unlockable difficulties.

  • Face an endless horde of aliens who seek only to infect all worlds in their path.

  • Create lines of defense between your planets, take advantage of the coverage of asteroid belts, place energy shields, deploy space turrets and fight against extinction.

  • Go on the attack at the right time and reconquer planets to increase your production lines.

  • Reconquer worlds infected by an alien plague.

  • Explore solar systems and find different types of planets, from icy worlds to desert wastelands.

  • Build on the planetary surface and return to the space view without loading screens!

  • Embark on an epic campaign in which you will have to regain control of several solar systems around the galaxy.

  • Prove your worth in skirmish mode. Adjust the parameters to your liking and randomly generate a different solar system in each game for infinite replayability.

  • Face numerous difficulty levels that will test your strategist skills.

Game details

Astra Sentinel Demo reviews

100% positive reviews all-time.

System requirements

Minimum

Minimum:
  • Requires a 64-bit processor and operating system

Recommended

Recommended:
  • Requires a 64-bit processor and operating system