How to Back Up and Restore JoiPlay Save Files (Never Lose Progress Again)
Few things sting like losing a save file you have poured dozens of hours into, especially in a long fan game you can never quite replay the same way. The good news is that learning how to backup JoiPlay save files is easy, because JoiPlay does not hide your progress in some locked system folder. Your saves are normal files sitting inside each game folder, so backing them up is just careful copying. This guide shows what to copy for each game type, three backup methods (phone folder or SD card, cloud, and PC), and exactly how to restore everything later. For moving saves between two devices as your main goal, our JoiPlay Save File Transfer Guide goes deeper on that side.
What Exactly Do You Need to Back Up?
JoiPlay keeps every game’s saves inside that game’s own folder, in the format the game engine itself uses. There is no single JoiPlay save vault to export. New players can read What Is JoiPlay? for how the app and its plugins work together, but for backups you only need one idea: find the game folder, copy the right files.
You have two choices:
- Copy just the save files: tiny and fast, perfect for routine backups
- Copy the whole game folder: bigger, but it captures saves, settings and the exact game build in one go
Here is what to look for by game type:
| Game type | Save files to copy | Where they sit |
|---|---|---|
| RPG Maker XP | Save01.rxdata, Save02.rxdata and so on | Game folder root |
| RPG Maker VX | Save01.rvdata style files | Game folder root |
| RPG Maker VX Ace | Save01.rvdata2 style files | Game folder root |
| RPG Maker MV | file1.rpgsave plus global.rpgsave | save folder inside the www folder |
| RPG Maker MZ | file1.rmmzsave plus the global files | save folder inside the www folder |
| Ren’Py | Numbered .save files | saves folder inside the game folder |
The number in the file name matches the save slot in the game, so file2 or Save02 is your second slot. The global and config files in MV and MZ games hold settings and unlock data, so copy them along with the slot files for a complete restore. A small number of games use their own subfolder layout, so if you cannot find the files above, search the game folder for anything ending in .rxdata, .rpgsave or .save.
Three Rules Before You Copy Anything
Backups fail for boring reasons, not technical ones. Follow these three rules and yours will work when you need them:
- ✅ Close the game first: never copy save files while the game is running or mid save, because a half written file can be copied in a broken state
- ✅ Keep names identical: never rename a save file or change the folder layout, because the game looks for exact names in exact places
- ✅ Keep one untouched master copy: work with a second copy when restoring or experimenting, so a mistake never destroys your only backup
Method 1: Back Up to a Folder or SD Card on Your Phone
This is the fastest routine backup and needs no internet. It protects you against a broken game folder, a bad update, or an accidental delete on the same phone.
- Open your file manager and find the game folder.
- Decide your scope: the save files from the table above for a light backup, or the whole game folder for a full one.
- Long press the files or folder and choose Copy.
- Go to a separate location, such as a JoiPlay Backups folder in your Documents folder or on your SD card.
- Create a subfolder named with the game title and the date, then paste.
- Open the backup folder once and confirm the files are really there, with sizes that look sensible rather than 0 KB.
That is the whole routine. It takes under a minute for save files, and it is worth doing after any long play session in a game you care about.
Method 2: Back Up to Google Drive or Another Cloud
A cloud backup survives a lost or dead phone, which a local copy cannot. Use this method for saves you truly cannot replace.
- Make a local backup first using Method 1, so you are uploading a tidy, dated folder.
- Open Google Drive, or your cloud app of choice, and create a JoiPlay Backups folder.
- Tap New, then Upload, and select your backup folder or the save files inside it.
- Wait until the upload fully completes before you delete or change anything on the phone.
- Open the cloud folder once and check the file names and sizes match your local copy.
Uploading just the save files keeps this quick even on slow connections. If you are setting up a fresh phone at the same time, our guide on How to Download Games for JoiPlay covers the install and game adding side of the move.
Method 3: Back Up to a PC
A PC copy is the most durable option, and it doubles as a rescue copy you can test. Most RPG Maker saves also work in the same game’s PC build, as long as the game version matches.
- Connect your phone to the PC with a USB cable and allow file transfer on the phone.
- Open the game folder on the PC through the phone storage.
- Copy the save files, or the full game folder, into a clearly named folder on the PC.
- Add the date to the folder name so future backups do not overwrite this one.
- Safely disconnect, then reopen the PC folder to confirm the files copied in full.
How to Restore a Backup
Restoring is the same copying process in reverse, with one extra rule: the game must already be in place, with the same folder structure the backup came from.
- Install or copy the game onto the phone first, in its normal folder.
- Launch the game once and save in slot 1. This creates fresh save files in exactly the right spots, which you will replace.
- Close the game completely.
- Copy your backup save files into the same locations they came from, replacing the fresh files.
- Do not rename anything and do not add extra folders in between.
- Launch the game, open the load screen, and check the slot shows the right chapter, location and play time before you overwrite anything again.
If the game refuses to load or throws an error after a restore, work through our JoiPlay Not Working guide, and double check the restore went into the correct folder level, which is the most common slip.
Always Back Up Before Updating a Fan Game
This is the warning fan game communities repeat for a reason. Big fan games usually release updates as a complete new download, and you are expected to replace the old game folder with the new one. That replacement is exactly where saves get lost or stranded.
Before you update any game:
- ✅ Copy the save files out of the old folder first, using any method above
- ✅ Keep the old game folder until the new build has loaded your save and played normally for a few minutes
- ❌ Never delete the old folder and then go looking for the saves, because they were inside it
Most updates accept saves from the previous version without trouble. A few change maps, scripts or items enough that an old save misbehaves, and your backup plus the old build is the only way back. Five minutes of copying beats restarting a 60 hour game.
Troubleshooting Backups and Restores
| Problem | Likely cause | Fix |
|---|---|---|
| Save slot is empty after restoring | Files pasted one folder too high or too low | Compare with the original layout and match it exactly |
| Game shows older progress than expected | You restored a different slot file | Check the number in the file name against the slot |
| Save loads, then the game errors | Save came from a different game version | Use the save with the build it was created on |
| No save folder exists on the new phone | The game has never been launched or saved yet | Start the game, save once in slot 1, then replace the files |
| Backup files show 0 KB | The copy was interrupted or taken mid save | Copy again with the game fully closed |
How Often Should You Back Up, and Where Should Copies Live?
A simple habit works better than a complicated system you will abandon. Back up at these moments and you are covered for almost everything:
- ✅ After a long session in a game you care about, especially before a boss, a route split or a big story turn
- ✅ Before updating a game, reinstalling JoiPlay, or clearing storage space in a hurry
- ✅ Before changing phones, factory resetting, or sending the phone for repair
- ✅ Any time a game warns that a choice or an ending cannot be undone
Where copies live matters as much as making them. One copy inside the game folder protects against nothing, because deleting the folder takes the backup with it. Aim for two homes: one on the phone but outside the game folder, and one somewhere else entirely, such as the cloud or a PC. That way a deleted folder, a broken phone and a lost phone are all survivable, and each backup only takes a minute to make.
Quick Backup Checklist
- ✅ Game fully closed before copying
- ✅ Correct save files for the game type, including global files for MV and MZ
- ✅ Backup stored in a dated folder with the game name
- ✅ One copy kept somewhere other than the game folder itself
- ✅ Fresh backup taken before every game update
- ✅ Restore tested on the load screen before deleting anything
Conclusion
Backing up JoiPlay saves is not a technical project. Because saves live as normal files inside each game folder, a backup is just a careful copy with the names and folders kept identical.
Pick the method that matches your risk: a phone folder for quick safety, the cloud for a copy that survives the phone, and a PC folder for long term storage. Do it before updates, reinstalls and phone changes, and you will never lose a long run to a simple accident again.