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BastionOS is a chill active incremental 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.
Mac · Apr 28, 2026
Worldwide · Exact date · Full release · IGDB
PC (Microsoft Windows) · Apr 28, 2026
Worldwide · Exact date · Full release · IGDB
Catalog sources
52 achievements available.
Hidden until unlockedSteam
Start the game without any weapon
LockedSteam
Install 10 Augments
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Install 15 Augments
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Install 1 Augment
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Install 20 Augments
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Install 30 Augments
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Install 3 Augments
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Install 50 Augments
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Install 7 Augments
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Unlock 100 Research Nodes
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Unlock 10 Research Nodes
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Unlock 150 Research Nodes
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Unlock 50 Research Nodes
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Upgrade Pachinko 10 times
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Upgrade Pachinko 25 times
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Upgrade Pachinko 40 times
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Upgrade Pachinko 50 times
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Upgrade Pachinko 5 times
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Complete Level 10
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Complete Level 15
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Complete Level 5
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Complete Level 20
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Complete All Levels
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Destroy 250 Crawlers
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Destroy 500 Snowflakes
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Destroy 500 Exploders
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Destroy 500 Grunts
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Destroy 500 Sparrows
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Destroy 75 Hulks
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Destroy 50 Goliaths
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Destroy 250 Hunters
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Destroy 250 Seekers
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Destroy 500 Rams
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Destroy 1000 Thorns
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Destroy 1000 Bulls
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Destroy 300 Giants
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Spent 1 000 000 Credits
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Spent 100 000 Credits
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Spent 10 000 Credits
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Spent 250 000 Credits
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Spent 5 000 000 Credits
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Spent 1 000 000 Pachinkoins
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Spent 100 000 Pachinkoins
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Spent 10 000 Pachinkoins
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Spent 3 500 000 Pachinkoins
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Spent 100 000 Processors
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Spent 25 000 Processors
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Spent 5 000 Processors
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Spent 1 000 000 Treasures
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Spent 250 000 Treasures
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Spent 50 000 Treasures
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Community notes
