BastionOS is an incremental action game where you command a military terminal to stack ludicrous weapons and upgrades onto a lone tower facing an endless machine army. Destroy a gigantic evolving horde, get destroyed, unlock new tech, repeat, and get strong enough to survive the next level.
Release Date:
Nov 3, 2025
Developer:
Publisher:
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Free Demo

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About This Demo

//This Demo includes the first 5 of 25 total levels, and early stages of the skill tree. 

//Select a level, and aim your tower's artillery towards incoming enemies. BOOM! Grab any precious resources the enemies drop.

//The tower will inevitably fall. Under your command it will, however, rise even stronger. Fortify your tower with weapons and upgrades.

//Research new and increasingly powerful tech.

//Defend the Bastion until the end. You and your weapons research program are the last line of defense against the machine army. There's no telling if this reckless operation will allow Humanity to survive. What will happen when the horde becomes insurmountable?

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 (64-bit)
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: GPU with basic DirectX 11 support
    • DirectX: Version 11
    • Storage: 200 MB available space
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 (64-bit)
    • Processor: 2.0 GHz
    • Memory: 4 GB RAM
    • Graphics: GPU with basic DirectX 11 support
    • DirectX: Version 11
    • Storage: 200 MB available space
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