Planned Release Date: April 2027

About This Game

Language: The game, including the demo, is currently in Japanese only. English support is planned for the full release.

A turn-based strategy game about seizing territory, paired with a visual novel whose ending changes with your choices and actions.

Play the included scenario, or use the built-in editor to assemble everything from the map to the factions and the story. You can even tune the rules and unit numbers, so the same system can carry an entirely different world.

Play | Deep turn-based strategy

Officers lead their troops from province to province. You command every battle yourself, turning the tide with terrain, unit matchups and officer skills. Send envoys to forge alliances, truces and declarations of war, or win over a province lord who defects with their land. Keep invading recklessly, and your neighbors will band together against you.

Play | A branching visual novel

Story scenes unfold between strategy turns. Will you cut off the water of Lake Biwa, or not? Your choices shape your faction's fate and change what happens next.

Build | Generate a map

Pick a landmass type and the number of factions, and a map no one has ever seen is born. Choose from 14 landmass types such as volcanic island, archipelago, inland sea and supercontinent, or leave it to chance. Factions: 2 to 50. Rivers flow, province borders are drawn, and every faction gets its own crest. You can even make lopsided worlds where one giant faction faces everyone else. Like the map? Play it right away as a new scenario.

Build | Scenario editor

A built-in tool for creating your own factions, officers, provinces, diplomacy, events and novel scenes. Adjust factions, provinces and diplomatic relations right on the map. Build events as a top-to-bottom flow, designing branches and choices on the spot. Tune rule values such as victory conditions, economy, unit types and skills, and import your own hand-drawn map image to change the entire stage. It doesn't even have to be Japan. Test-play the moment you're done, then jump back into the editor to fix things.

Share the world you made with anyone as a single ZIP file.

Included scenario: Prefecture Wars

An age when Japan's prefectures fight for territory in earnest.
Governors have become warlords, and prefectural offices have become castles. All 47 prefectures are playable. The Gunmar Empire descends from the mountains of Gunma, Yamanashi and Shizuoka refuse to give up Mount Fuji, and Hokkaido has given up on being human.


Play, build, and on to the next worldline.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

Some artwork in this game was created with generative AI tools (ChatGPT / OpenAI). This includes officer portraits, scenario key art, novel background images, province images, faction icons and crests, the terrain images of the Japan map, battle effect images, weather effect images, and UI decoration images. All of these are static images generated in advance during development; no generative AI is called during gameplay.
No generative AI was used for music, sound effects or fonts. The map generation feature uses procedural generation based on random numbers and algorithms, not generative AI.