How to Update Pokemon Infinite Fusion Without Breaking Your Save File

You’ve finally fused that terrifyingly cool Aegislash and Charizard combo, but then you see the notification. A new version of Pokemon Infinite Fusion is out. Your heart sinks a little. Updating fan games is notoriously nerve-wracking because, honestly, one wrong move and your sixty-hour save file vanishes into the digital ether.

It happens.

But it doesn't have to happen to you. Updating this specific game is actually a lot simpler than it used to be back in the early days of manual folder dragging and file overwriting. Since the game relies on the RPG Maker XP engine and a custom launcher, the process has become relatively streamlined, though there are still a few quirks that can trip up even veteran players.

Why you need to stop ignoring those update prompts

Most people stick with an old version because they’re afraid of the "The Script is Taking Too Long" error or the dreaded black screen of death. I get it. If it ain't broke, don't fix it, right?

Well, not exactly.

Pokemon Infinite Fusion is a massive project with thousands of custom sprites being added every single month. If you aren't updating, you’re missing out on the high-quality art that replaces those weird, janky procedural fusions. More importantly, the developers frequently patch game-breaking bugs that occur during specific fused-move interactions or post-game quests. If you’re playing on a version from six months ago, you’re basically playing a bugged beta.

The easiest way: Using the official launcher

If you downloaded the game through the official Discord or the community-vetted GitHub links, you likely have the InfiniteFusionLauncher.exe. This is your best friend.

Seriously.

When you open the launcher, it usually checks for a connection to the server. If a newer version exists, a "Update" button replaces the "Play" button. You click it. The launcher then fetches the new files and merges them. It’s supposed to be seamless.

But sometimes it hangs at 99%.

If the launcher freezes, don't force-close it immediately. The game is moving thousands of tiny sprite files, and Windows Defender sometimes decides to scan every single one of them. This creates a massive bottleneck. You might see your disk usage spike to 100% in Task Manager. Just walk away, grab a coffee, and let it finish. If you kill the process mid-update, you risk corrupting the Data folder, which is where the real headache begins.

Doing it manually (The "Old School" method)

Sometimes the launcher just won't behave. Maybe your firewall is blocking the connection, or maybe the server is down because 50,000 people are trying to download a new regional variant at the same time. This is when you learn how to update pokemon infinite fusion manually.

First, download the latest "Full Version" or "Update Patch" from the official PokéCommunity thread or the Discord.

1. Extract the new files into a brand new folder. Do not extract them directly into your current game folder yet.
2. Look for the Data and Graphics folders in the new download.
3. Copy these and paste them into your old game directory.
4. When Windows asks if you want to replace files, say yes.

Wait. What about the save file?

This is the part that scares everyone. In Pokemon Infinite Fusion, your save data is almost never stored in the actual game folder. It’s tucked away in your PC’s AppData directory. Specifically, go to C:\Users\[YourName]\AppData\Roaming\Pokemon Infinite Fusion. Your Save.rxdata lives there. Because the game looks at this specific Windows folder, you can delete your entire game folder, download a fresh copy, and your progress will still be there when you boot up the new version.

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Dealing with the Sprite Pack nightmare

Updating the game engine is one thing, but updating the sprites is a whole different beast. The "Preloaded" version of the game contains every sprite ever made, but it makes the initial load time take ten minutes. Most players use the "Dynamic" version, which downloads sprites as you see them in-game.

If you’ve updated the game but the new fusions still look like pixelated blobs, your CustomBattlers folder is likely out of date.

You can manually download the monthly sprite packs from the Discord. Once you have them, you need to move them into Graphics/CustomBattlers/indexed. Don't just dump them in the main folder. The game engine is very picky about the file structure. If the sprites aren't in the numbered folders (like folder 1, folder 2, etc.), the game won't find them, and you’ll be stuck looking at the auto-generated versions that look like they were made in MS Paint by a toddler.

Common pitfalls and how to dodge them

• Anti-Virus Overkill: Programs like Avast or McAfee hate RPG Maker games. They often quarantine the Game.exe during an update. If your game won't start after an update, check your "Virus Chest" or "Quarantine" and restore the file. Better yet, add the game folder to your exceptions list.
• Map Corruptions: If you update while standing in a specific area that was changed in the new version (like a gym or a newly added route), the game might crash upon loading. Pro tip: Always save your game inside a Pokemon Center before updating. Pokemon Centers are the most "stable" maps and rarely change between versions.
• The "Script Hang" Error: This happens when the game tries to load old save data that references a move or item that was removed or renamed. If this happens, you might need to use the "Fix Game" option in the launcher, which re-verifies the core scripts without touching your save.

Playing on Steam Deck or Android

Updating on the Steam Deck is slightly more annoying because of how Proton handles file paths. Since the Steam Deck uses a "prefix" system (basically a fake C: drive for every game), you have to make sure you're dropping the update files into the specific pfx folder associated with your Infinite Fusion installation. If you just download a new version and add it to Steam as a new non-steam game, it won't see your old save file because it will create a brand new, empty prefix.

For Android users using JoiPlay, the process is basically a manual overwrite. You download the new zip, extract it, and tell JoiPlay to point to the new Game.exe. Just make sure you aren't deleting your Saves folder if you manually moved it into the game directory.

Actionable steps for a clean update

To ensure you don't lose that shiny Fusion you spent three days hunting, follow this exact sequence:

• Backup your save: Go to %appdata% and copy the Pokemon Infinite Fusion folder to your desktop. If everything goes south, this is your insurance policy.
• Check the Version: Look at the bottom right of your title screen. If you're on 5.x and the new version is 6.x, a manual "clean" install is usually better than a launcher update.
• Clean the Sprite Cache: If you notice weird graphical glitches after updating, find the CustomBattlers folder and delete the tmp files. This forces the game to re-index the sprites.
• Stay in the Loop: Join the official Discord. They have a "Status" channel that will tell you if the current update build has a major bug before you download it.

Updating doesn't have to be a gamble. By keeping your save data separate and understanding how the folder hierarchy works, you can keep your journey going through every new version the devs throw at us. Just remember: save in the Pokemon Center, backup that rxdata file, and let the launcher do its thing without clicking "Cancel" every five seconds.

Once the update is finished, run the game as administrator for the first time. This gives the game permission to write new registry entries or move files around if the update requires a structural change to the folder system. After that first boot, you’re good to go back to regular play.