Crimson Core Guides - Install Mods
Adding ROMs to PokeMMO
Same process on all platforms
Once you have your ROM files, add them through the PokeMMO client before logging in for the first time.
- Open PokeMMO and go to the login screen.
- Click or tap Game Management (below the login fields).
- Select Add ROM and navigate to your ROM file.
- Repeat for each ROM you want to add.
- Log in. The corresponding region will now be available in-game.
On desktop you can also drop ROM files directly into the roms/ folder inside the PokeMMO directory and they will be detected automatically on next launch.
Most Popular Mods
Community-approved picks from the official forums
Replaces all in-battle Pokemon sprites with higher-resolution versions. One of the longest-running and most universally recommended mods for new players.
Forum ThreadAdds Gen 5 styled follower sprites so your Pokemon walks behind you. Ensures all Pokemon in the game will follow behind you.
Forum ThreadAdds battle sprites for Mega Pokemon, along with updated follow sprites and monster icons. One of the most technically impressive mods on the forums.
Forum ThreadA complete music overhaul replacing all default tracks with remastered versions from BDSP, ORAS, and Let's Go.
Forum ThreadRemoves or shortens dialogue boxes across the entire game so repeated actions like healing, fishing, hordes, and PC box interactions resolve faster. Two versions: Speed and Story.
Forum ThreadOverhauls the Kanto region with DS-style upscaled textures and tilesets. Consistently one of the most downloaded mods on the forums.
Forum ThreadIn PokeMMO, "strings" are the text and dialogue files the game uses for every on-screen message — battle results, NPC dialogue, healing prompts, PC box interactions, and more. By default these all wait for you to dismiss them, which adds up fast during grinding.
A string mod replaces those files with shorter or blank versions so the game skips past them automatically. The savings are small per interaction but stack up significantly over long sessions of horde farming, shiny hunting, or gym reruns.
Installing a Mod
Same process on all platforms. Done from the login screen, not in-game.
All platforms use the same Mod Management screen. You access it before you log in, from the PokeMMO login page. Mods come as .zip or .pk3 files downloaded from the forums.
- Download the mod file from its forum thread. Save it somewhere accessible on your device.
- Open PokeMMO. On the login screen, look for the Mod Management button (bottom area of the screen, before you enter your credentials).
- Click or tap Import Mod.
- Navigate to the mod file and select it. It will appear in the mod list.
- Make sure the toggle next to it is enabled.
- Log in as normal. The mod is now active.
If the mod is a theme, it also needs to be selected at Settings > Interface > Theme after installation. A newly installed theme will appear in that dropdown list.
Platform Notes
Platform-specific details and differences
Desktop is the simplest platform. Download the PokeMMO client from pokemmo.com/en/downloads, extract it, and run the launcher. Windows, macOS, and Linux are all supported. Linux users can also install via Flatpak from Flathub, which is the recommended method on Steam Deck.
mods/You can also drop mod files directly into the mods/ folder and they will appear in Mod Management automatically on next launch.
PokeMMO on Android is an APK sideload, not a Play Store app. Download the APK from pokemmo.com/en/downloads on your device, enable "Install from Unknown Sources" in your settings, and install it.
- Download the mod file to your device using your browser. Your Downloads folder is fine.
- Open PokeMMO. On the login screen, tap Mod Management, then Import Mod.
- Your device file picker will open. Navigate to Downloads and select the mod file.
- Enable it in the list and log in.
If the file picker does not show .zip or .pk3 files, switch the filter from "Images" or "Documents" to "All Files".
A known Android bug can prevent a second import attempt in the same session. If it fails, clear the app data from your Android settings and try again. Make sure you remember your login credentials before doing this.
PokeMMO is not on the App Store. It requires sideloading via AltStore, Sideloadly, or Signulous. AltStore is the recommended free option. Once installed, add the PokeMMO source in AltStore at https://pokemmo.com/altstore/ and install from there.
- On your iPhone or iPad, open Safari and go to the mod's forum thread.
- Long-press the download link and choose "Download Linked File". This saves it to your iCloud Downloads folder.
- Open the Files app and confirm the file is visible under iCloud Drive > Downloads.
- Open PokeMMO. On the login screen, tap Mod Management, then Import Mod.
- Navigate to iCloud Drive > Downloads and select the file.
- Enable it in the list and log in.
On some iOS versions, tapping a mod file in the picker closes the picker without installing anything. There is a built-in fix.
- Go to the Client Management screen from the Mod Management menu.
- Look at the top-right corner. There is a small settings cog icon.
- Tap the cog once. A message will appear: "Alternative file selection mode enabled".
- Tap Import Mod again. The file picker will reopen using a different method.
- Select your mod file. It will install correctly this time.
This setting resets when you fully close the app. Tap the cog once again before importing next time.
The cog is only active on the Client Management screen specifically. Force-close PokeMMO, reopen it, navigate back to Client Management, then try again.
Open the Files app and move the mod file from iCloud Drive into On My iPhone/iPad. Local storage is more reliably accessible to third-party apps on some iOS versions.
