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Full-data protection for commercial Ren'Py visual novels — 100% free

RenMori takes a Ren'Py 8.x build and produces a protected distribution: every asset — scripts, sprites, CGs, audio, video, fonts, translations, and configuration — is packed into an encrypted container and decrypted only inside the running engine. A game that runs on the player's machine can never be made uncrackable, so RenMori maximizes the cost of extraction — off-the-shelf unpackers and most lazy agents fail outright — but it cannot stop an expert-level reverse. The honest threat model is here.


1. Install & use the CLI

Install

pip install renmori
renmori --version

Requires Python 3.9+ on the developer's machine (reading a renmori.toml config needs 3.11+, or pip install tomli on older versions). cryptography is pulled in automatically. To work on the source instead:

git clone https://github.com/MewBaka/RenMori.git
cd RenMori && pip install -e .

Protect a game

  1. Build your game in the Ren'Py launcher (Build Distributions). RenMori runs on that output and never touches your source.

  2. Protect the build — the input is the built folder, or the .zip the launcher made (it is unzipped for you):

    renmori protect ./dist/MyGame-1.0-pc -o ./dist/MyGame-1.0-pc-protected
    # or straight from the archive:
    renmori protect ./dist/MyGame-1.0-pc.zip
    

    The first full protect downloads the closed plugin for your platform from the public release, verifies it, and caches it — no manual step. On a terminal it asks first; in CI it downloads automatically.

  3. Verify the result (usable as a CI gate):

    renmori verify ./dist/MyGame-1.0-pc-protected
    
  4. Ship the protected folder as your release (renmori.rmc + renmori.rpe together). Don't re-run the Ren'Py launcher on it — that rebuilds from source and drops the protection.

The command is zero-config by default, prints a machine-readable JSON result line for CI, and has clear exit codes. An optional renmori.toml controls chunk size, an exclude list, lockdown, strength, and key sources. For the open-source baseline format (no plugin, fully offline), pass --strength baseline. Full reference: the CLI docs and the renmori.toml example.


2. Documentation

The full documentation lives at renmori.mewbaka.cn — the key pages, in the order you'll need them:

Understand it

Protect your game

Automate in CI

Ship

Internals & reference


3. Licensing

RenMori — the framework and tools, the closed plugin, and the runtime that ships inside a game — is under the RenMori License 1.0: LICENSE (Chinese: LICENSE.zh-CN.md).

  • Free to use. Protecting any Ren'Py game, commercial or not, is free, and the RenMori runtime may be redistributed embedded in a released game at no charge.
  • No resale. Selling RenMori itself or a modified version, or running a paid "encryption-as-a-service" with it, is not permitted.
  • This is a source-available license, not an OSI open-source one, because the no-resale term cannot be expressed under a permissive license.

Third-party notices are in NOTICE (note the FFmpeg LGPL/GPL terms). No warranty of unbreakability is given — see the license and the threat model.

Full terms and developer guidance are on the docs site: disclaimer, contribution terms, and notes for developers.

For licensing questions or technical help, contact: team@mewbaka.cn

Metadata

Release files for renmori 1.1.0

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A note on package security

PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.

To learn more about protecting yourself from malicious actors, visit our package security documentation.

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