Blast through enemies, build defenses, launch fighters, and upgrade your way to victory in this fast-paced space shooter/action RTS hybrid.
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About This Game

Astra Defender is a unique blend of space shooter action and real time strategy. Your objective is simple: destroy your opponents' bases, and defend your own.

Skillfully pilot your ship through infinite space, and use resources to build defenses and upgrade your ship. Command your fighters to attack the enemy's defenses, or call them back home to protect your own base.

To emerge victorious, you'll have to master your piloting skills, optimize your unit placement, prioritize your upgrades, and strategically plan your attacks on the enemy.

BUILD


You can build units anywhere that your ship can travel, as long as there's room and a nearby power source. Factories increase your resource generation. Research stations allow you to research upgrades for your ship and units. Turrets bolster your defenses. Shipyards house your army of fighters.

UPGRADE


Build research stations and use them to research upgrades for your ship and units. Basic upgrades include your ship's speed, firepower, and health. Ship Config upgrades allow you to change weapons, heal your units, and more. Advanced upgrades provide additional utility.


Each upgrade requires time and resources to research, so plan accordingly. Will you max out your firepower as quickly as possible? Or will you prioritize speed and survivability?

ATTACK


While the ship you control starts out pretty weak, a fully-upgraded ship can shred through most enemy units with ease. But you don't have to always attack head-on—create shipyards to build up your fleet, then launch fighters at your enemies and overwhelm their forces until they are annihilated.


Want even more backup? Form alliances and team up against a common enemy, but beware: alliances can be broken at any time!

System Requirements

Windows
SteamOS + Linux
    Minimum:
    • OS *: Windows 7
    • Processor: 2GHz Dual Core
    • Memory: 4 GB RAM
    • Graphics: Hardware Accelerated Graphics with dedicated memory, 1 GB recommended
    • Storage: 400 MB available space
    Recommended:
    • OS: Windows 10
    • Processor: 2GHz Dual Core
    • Memory: 4 GB RAM
    • Graphics: Hardware Accelerated Graphics with dedicated memory, 1 GB recommended
    • Storage: 400 MB available space
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.
    Minimum:
    • Processor: 2GHz Dual Core
    • Memory: 4 GB RAM
    • Graphics: Hardware Accelerated Graphics with dedicated memory, 1 GB recommended
    Recommended:
    • Processor: 2GHz Dual Core
    • Memory: 4 GB RAM
    • Graphics: Hardware Accelerated Graphics with dedicated memory, 1 GB recommended
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