BRIGANDINE ABYSS

- Developer
- Adglobe
- Publisher
- NIS America, Inc., Happinet
- Released
- Aug 26, 2026
- Steam reviews
- 38% of players recommend it, from 278 reviews — Steam calls that “Mostly Negative”
- Tags
- SimulationStrategy
On Linux, Steam Deck and Steam Machine
Valve rates it Playable on Steam Deck. Valve rates it Verified on Steam Machine. Valve marks it SteamOS Compatible.
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About this game
The developer's description, from the game's Steam store page.
Story・Intro
Once upon a time, the world was saved by the Brigandine.
This arcane armor, forged by the great sorcerer Lunadea, brought an end to the ambitions of the Abyssloa Empire.
200 years have since passed, and the continent’s current greatest superpower, the Kingdom of Solginat, has grown into a disquieting presence. In response, the rulers of various nations, spearheaded by the queen of Mysteine—a realm that carries on Lunadea’s will—gather together to issue a formal denunciation…

Game Modes
Story Mode
Experience the unique stories of six distinct nations, each set in motion by the rebirth of the Abyssloa Empire.

Mission Mode
Select from 24 nations to play as, each with its own win condition.

Strengthen Your Nation While Time Allows
During Organization Phases, allied troops can be strengthened in preparation for the upcoming battles.
Efficient task management will prove key in maximizing your forces’ improvements.

Invade Neighboring Nations to Bolster Your Own
During Attack Phases, other countries can be invaded to obtain resources or strengthen personnel.
Whether to invade or not is for you to decide.

Employ Tactics to Command Troops and Annihilate Foes
Battles are turn-based and take place on a hexagonal grid.
Focus down enemy leaders to force a retreat or defeat each unit one by one. Strategy is in your hands.

System requirements
As Steam lists them.
Windows
Minimum
- Requires a 64-bit processor and operating system
- OS
- Windows 11
- Processor
- Intel® Core™ i5‑4670 (quad‑core), 3.40 GHz or higher
- Memory
- 16 GB RAM
- Graphics
- NVIDIA® GeForce® GTX 1060 (VRAM 4GB) or higher
- DirectX
- Version 12
- Storage
- 16 GB available space
Recommended
- Requires a 64-bit processor and operating system
- OS
- Windows 11
- Processor
- Intel® Core™ i5-7600 (quad-core) 3.50 GHz or higher
- Memory
- 16 GB RAM
- Graphics
- NVIDIA® GeForce® RTX 2060 (VRAM 6 GB) or higher
- DirectX
- Version 12
- Storage
- 16 GB available space
Downloadable content
Steam lists 2 items of downloadable content for this game.
News
What BRIGANDINE ABYSS's studio and the outlets Valve syndicates on Steam have said recently.
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