Ren’Py tracks global variables (like unlocked galleries or seen text) in a file called persistent . If your save file references persistent data that doesn't exist on the new device, the game may glitch. Step 1: Locate Your Ren'Py Save Files
This article explains why this happens, how to fix it, and how to safely share save files across devices. Why Does This Error Occur?
Ren’Py is the engine behind thousands of popular visual novels. One of its greatest strengths is cross-platform compatibility, allowing you to play the same game on a PC, Mac, or Android device. However, moving your progress between devices often triggers a frustrating warning:
Stops data crashes from mismatched versions. Security Check: Confirms you intend to load external data. renpy this save was created on a different device link
: The game will upload your progress and persistent data to the secure Ren’Py server, generating a unique 10-character code .
The data is encrypted before it leaves your computer, and the encryption key is derived from the code itself. The Ren'Py servers only store a hash of the code for verification, not the actual code or your decrypted data.
If you play on multiple PCs, you can use a symbolic link (Symlink) to point your Ren’Py save folder to a folder inside your Dropbox or OneDrive. This ensures that the persistent file and all save files are updated in real-time across all devices. How to Fix the "Device Mismatch" Error Ren’Py tracks global variables (like unlocked galleries or
Share the folder with your Android device and map it directly to the game's Android save directory ( Android/data/... ).
Ren'Py save files use the format, which is highly flexible but can be used to execute arbitrary code on a computer if the file is maliciously modified.
You can add a custom "Import Save" button to your game by bypassing the validate_save function in 00saveload.rpy , but this requires editing the engine source. Why Does This Error Occur
If you are a player trying to load your own save file on a new device, follow these steps to resolve the issue: 1. Trusted File Prompt (The Easiest Way)
In most Ren’Py games, this message is just a , not a hard block. Try clicking through it. If the game loads and you can see your text and UI, immediately save the game into a new slot . This new save will now be "native" to your current device. Step 2: The "Persistent" Reset If the game refuses to load or crashes: Back up your .save files. Delete the persistent file in the save folder.