How to Install a Walkthrough Mod in Ren’Py Games

A walkthrough mod, often called a WT Mod, adds hints directly into a game so you can see which dialogue choices affect points, routes, scenes or important variables while playing.

Most walkthrough mods for Ren’Py games are installed by copying the mod files into the game’s existing game folder. The process is usually simple, but installing a mod made for the wrong game version or copying the files into the wrong directory can cause errors.

This guide explains how to install a walkthrough mod, how to find the correct Ren’Py folder, how to back up your original game, how to remove a mod and what to do if the walkthrough does not work.

You can also browse more GameCax walkthroughs and game guides if you are looking for a guide or mod for a specific game.

A walkthrough mod modifies a game’s scripts or interface so walkthrough information appears directly while you play.

Depending on the mod, it may add features such as:

• Recommended choices
• Point indicators
• Colored dialogue choices
• Route information
• Scene or event hints
• Variable information
• Relationship point changes
• Additional save or interface options
• Gallery or achievement unlocks

A walkthrough mod is different from a traditional text walkthrough because you do not need to constantly switch between the game and a browser. The information appears at the point where the relevant decision is made.

Before copying any files, check three things:

1. The walkthrough mod is made for the correct game.
2. The mod supports your current game version.
3. You have a backup of the original game files.

The second point is especially important. Walkthrough mods often modify Ren’Py script files, so a mod made for an older release can overwrite scripts from a newer game version.

Match the Game and Mod Versions

For example, if the mod is labeled:

GameName-v0.34-WT-Mod.zip

you should normally use it with the corresponding v0.34 version of the game.

Do not automatically assume that a v0.34 walkthrough mod will work with v0.35, v0.36 or another release.

Whenever GameCax provides a version-specific walkthrough mod article, check the compatibility information on that page before installation.

First, download the original game and extract it normally.

Do not attempt to install the walkthrough mod directly into a ZIP or RAR archive.

A typical extracted Ren’Py game on Windows may look similar to:

GameName/
├── GameName.exe
├── game/
├── lib/
├── renpy/
└── other files

The important folder for most walkthrough mods is:

GameName/game/

If you are not sure whether a title uses Ren’Py, you can also browse the Ren’Py games section on GameCax.

Download the walkthrough mod that matches your game version.

The file may come in formats such as:

• .zip
• .rar
• .7z

Extract the archive before installing it.

After extraction, many walkthrough mods contain a structure similar to:

Walkthrough Mod/
└── game/
    ├── scripts.rpy
    ├── screens.rpy
    └── other mod files

The exact filenames vary between mods. The important part is that the mod’s game folder usually needs to be merged with the original game’s game folder.

Before installing the mod, create a backup.

You can use either of these methods:

Method 1 – Back Up the Game Folder

Copy:

GameName/game/

and rename the copy:

game-backup/

Method 2 – Keep a Clean Copy of the Entire Game

This is often the easiest option if the game is not very large.

Keep one untouched installation and install the walkthrough mod into a second copy.

For example:

GameName-Clean/
GameName-Walkthrough-Mod/

This makes troubleshooting and removing the mod much easier.

Open the extracted walkthrough mod.

If it contains a game folder, copy that folder into the game’s main directory.

For example:

Walkthrough Mod/game/

should be copied into:

GameName/

Your operating system should recognize that a game folder already exists.

Choose the option to merge the folders.

If you are asked whether matching files should be replaced, the walkthrough mod may require those files to overwrite the original versions.

After installation, the structure should remain:

GameName/
├── GameName.exe
├── game/
│   ├── original game files
│   ├── walkthrough mod files
│   └── ...
├── lib/
└── renpy/

The most common installation mistake is accidentally creating another game folder inside the existing one.

Incorrect

GameName/
└── game/
    └── game/
        └── mod files

Correct

GameName/
└── game/
    └── mod files

If you have:

game/game/

the walkthrough will often fail to load because Ren’Py is looking for the scripts in the original game directory.

Once the files have been copied correctly, launch the game normally.

On Windows, this usually means running:

GameName.exe

You normally do not need to launch a separate application for the walkthrough mod.

The mod loads together with the game because its scripts are located inside the Ren’Py game directory.

The exact appearance depends on the mod creator.

Common signs include:

• Additional text next to dialogue choices
• Choices highlighted in different colors
• Relationship point changes displayed beside choices
• New walkthrough options in Preferences
• New icons or interface buttons
• Route names displayed during choices

You may need to progress until the first choice covered by the mod appears before you see any visible difference.

Naughty Lyanna is an example of a Ren’Py game with a separate walkthrough mod.

If you are installing a Naughty Lyanna walkthrough mod, first get the corresponding version from the Naughty Lyanna download page.

The same general installation process applies:

1. Extract Naughty Lyanna.
2. Extract the walkthrough mod.
3. Find the mod’s game folder.
4. Copy it into the Naughty Lyanna directory.
5. Merge it with the existing game folder.
6. Launch the game normally.

Always use the walkthrough mod made for the specific Naughty Lyanna version you are playing.

Windows is generally the simplest platform for manually installing Ren’Py walkthrough mods.

1. Extract the game.
2. Extract the walkthrough mod.
3. Open both folders in File Explorer.
4. Copy the mod’s game folder.
5. Paste it into the main game directory.
6. Select Merge or Replace files when required.
7. Run the game’s .exe file.

Avoid installing the game inside a protected Windows directory such as Program Files if you encounter permission errors.

A simple location such as:

C:\Games\GameName\

can make manual mod installation easier.

Mac installation depends on how the game’s Ren’Py package is distributed.

In many cases, you need to access the application package and locate its internal game files before copying the walkthrough mod.

If you have problems launching Ren’Py games on macOS in general, see the GameCax guide to playing games on macOS.

Because Mac packages can differ between releases, follow any additional instructions supplied by the walkthrough mod creator when available.

Do not assume that a PC walkthrough mod will work on Android.

Desktop Ren’Py mods are commonly distributed as replacement scripts for the PC version. Android builds may package game resources differently.

If the mod creator provides a dedicated Android version or explicit Android instructions, follow those instructions instead.

If no Android support is listed, treat the walkthrough mod as desktop-only rather than copying files into arbitrary Android folders.

Not always.

Many walkthrough mods only modify choice displays or interface scripts and can work with existing saves.

However, compatibility depends on what files the mod changes.

A mod that modifies variables, initialization code or story scripts may behave differently with an existing save.

If the mod creator specifically recommends starting a new game, follow that recommendation.

A compatible walkthrough mod should not automatically damage saves, but problems can occur when:

• The mod is made for another game version
• Scripts from different releases are mixed
• Several incompatible mods are installed together
• A mod changes variables expected by the game

Keeping multiple manual save slots is useful even when using a walkthrough.

1. Check the Game Version

The first thing to check is whether the walkthrough mod matches the base game.

For example:

Game v0.34
Walkthrough Mod v0.34
= Expected match

while:

Game v0.35
Walkthrough Mod v0.34
= Possible incompatibility

2. Check the Folder Structure

Make sure you did not create:

game/game/

The mod files should normally be directly inside the existing game’s game folder.

3. Extract the Archive First

Do not leave the walkthrough scripts inside a ZIP or RAR file unless the creator specifically says the archive should remain there.

4. Check Whether Files Were Actually Replaced

If the mod replaces an original script but your operating system skipped the conflicting file, the walkthrough may not load correctly.

5. Remove Other Mods Temporarily

Two mods that edit the same Ren’Py script can conflict with each other.

Test the walkthrough mod on a clean game installation when diagnosing problems.

If the game displays a traceback or exception immediately after installing the mod, version incompatibility is one of the first things to investigate.

Restore the clean files and test the unmodified game.

If the clean game works but the error returns after installing the walkthrough mod, check:

• Game version
• Mod version
• Installation directory
• Other installed mods
• Instructions supplied by the mod creator

This often happens when the base game has been updated but the walkthrough mod has not.

For example, a walkthrough written for v0.34 cannot automatically understand dialogue and variables introduced in v0.35.

The game may still start, but newly added choices may have no walkthrough information or, in worse cases, older scripts may interfere with newer content.

For this reason, GameCax walkthrough mod articles should always be checked for compatibility information before installation.

Sometimes, but compatibility cannot be assumed.

Two Ren’Py mods can modify the same:

• .rpy files
• .rpyc files
• screens
• variables
• menus
• configuration files

If both mods replace the same script, installing the second one may overwrite part of the first.

Unless the mod creators confirm compatibility, install and test one mod at a time.

The easiest way to remove a mod is to restore the backup created before installation.

Using a Backup

1. Close the game.
2. Delete or move the modified game folder.
3. Restore your clean backup.
4. Launch the game and test it.

Using a Clean Game Copy

If you do not know exactly which files the mod changed, replacing the modified installation with a clean copy is safer than manually deleting individual scripts.

Some Ren’Py troubleshooting instructions may tell you to remove compiled .rpyc files when replacing scripts.

Do not do this automatically for every walkthrough mod.

If the mod creator specifically instructs you to remove certain compiled files, follow those instructions. Otherwise, use the installation method included with the mod.

• Match the mod version with the game version.
• Back up the game before installation.
• Extract the mod before copying files.
• Check that the folder structure is correct.
• Keep multiple manual saves.
• Do not combine unrelated mods without checking compatibility.
• Use a clean game copy when troubleshooting.
• Recheck compatibility every time the base game is updated.

For most Ren’Py games, installing a walkthrough mod involves extracting the mod and merging its game folder with the existing game folder inside the base game.

The most important step is not the file copying itself but version compatibility. A walkthrough mod may replace game scripts, so always use a mod designed for the release you are currently playing.

Back up the original game first, avoid creating an accidental game/game/ directory and keep a clean copy available for troubleshooting.

If you are looking for more game-specific instructions, walkthroughs and mods, browse the GameCax Guide & Walkthrough section.