Narrative Incremental RPG

An endless chronicle, rewritten by your choices.

A free narrative idle RPG. Choices shape your build, defeated enemies join you as Echoes, progress continues while the game is closed, and every rebirth lets you reread twelve chapters from a different angle.

Language: the game interface is currently Japanese only. This page and the press kit are available in English.

  • Free to play
  • No account or install
  • Offline progress
  • No paid power or speed
An open chronicle at the center of an endless library
KEY ARTKey art. Not a gameplay screenshot.

The Archive Remembers

The more you record, the more the world changes.

Choices become your build

Thirty-nine choices across twelve chapters feed six Narrative Resonance builds, later scenes, and six endings.

Defeated enemies join you

Enemies have a chance to be recorded as Echoes. Each of the 150 has unique art, abilities, and three memories, and can fight or run idle expeditions.

Progress while closed

Production and expeditions resolve up to 24 hours of offline time when you return. Autosave, recovery, and JSON export protect your save.

How to Play

Choose. Record. Idle. Rebirth.

Short actions, long consequences. Screenshots below are from the Japanese web version.

Story screen showing Chapter 12 text and the record of the ending reached

1. Choose

A choice does not end with the next line. It returns through what companions know, how you fight, later chapters, and endings.

GAMEPLAYStory screen (Japanese UI)
Echo codex with illustrated enemy cards, ranks, and expedition traits

2. Record

Record defeated enemies as Echoes. Ranking them up opens memories and conversations, and Mastery continues past Rank 5.

GAMEPLAYEcho codex (Japanese UI)
Home screen with the Focused Recording button and the next-step guide

3. Idle

Automate production, runs, quest claims, and previously read choices. The home screen always shows your next step.

GAMEPLAYHome screen (Japanese UI)
Rebirth screen with rebirth count, memory points, and a breakdown of points to gain

4. Rebirth

Your first rebirth comes after Chapter 4. Turn a run into permanent Memory, then try other choices, Paradox Laws, and endings.

GAMEPLAYRebirth screen (Japanese UI)

Trailer

INCUNORA in 36 seconds

Built only from gameplay footage. Silent, with burned-in Japanese captions.

Battle screen with chapter progress, replay conditions, and pre-boss dialogue
GAMEPLAYBattle. Chapter bosses open with dialogue between your party and the enemy.
Endless Archive screen with current depth, best depth, edition, and edition rules
GAMEPLAYEndless Archive. Rules change each edition, with a boss rematch every 25 floors.

Free to Play

Free to the end. No power for sale.

FAQ

Frequently asked questions

Can I play in English?
Not yet. The game interface is Japanese only. Common game terms such as Battle, Skill, and Quest appear in English.
Is it really free?
Yes. All gameplay is free, with no paid gacha, premium currency, stamina, or ads.
Do I need an account or download?
No. Open the page and play. You can install it as a PWA. Google account sync is optional and only needed to move saves between devices.
How long is it?
The design targets are 10–15 hours to the first ending and 30–35 hours for all six, based on automated simulation. Reading speed changes this. The Endless Archive continues after the story.
Can I stream or make videos?
Yes. See the streaming and video guidelines.
Was generative AI used?
Generative AI was used as a production aid for one promotional background and some in-game character and Echo illustrations. Gameplay captures, copy, and numbers were edited and verified in production. The game performs no live AI generation and sends no player data to an AI service.

For Creators & Press

Streamers, creators, and press

Streaming guidelines

Let's plays, streams, and videos are welcome without prior contact. Read the guidelines for monetization and restrictions.

Press kit

Fact sheet, logos, key art, screenshots, and the trailer are in the press kit.

Contact

Operator and contact

INCUNORA is operated by incunora. Japanese or English is fine.

General
contact@incunora.com
Support
support@incunora.com
Privacy
privacy@incunora.com
Security
security@incunora.com
Press
press@incunora.com