Is RIVALSFPS.GG safe?

Why Windows and antivirus warn about it

The installer is not code-signed. Windows SmartScreen judges a file partly by how many people have downloaded it, so a new unsigned build can get a warning: click More info, then Run anyway. If Windows asks for permission when you install the Signature Bypass, the prompt says Unknown publisher for the same reason.

Some antivirus engines have flagged the installer with machine-learning verdicts rather than matches for known malware, because it is unsigned and carries a DLL loader and a signature bypass plugin that it installs in the game folder. A Malwarebytes scan of an earlier installer, from August 7, 2026, is published in full: read the Malwarebytes scan log.

The GitHub release page lists each release's SHA-256 next to its file.

What it changes

The main ones. The first four happen when you install and run it; the rest happen only when you use a feature or start the game from the app.

• The app itself, in %LOCALAPPDATA%\RIVALSFPS.GG or a folder you pick during setup, with a Start menu shortcut and a desktop shortcut unless you turn that off during setup.
• Its settings, caches and backups, in %APPDATA%\RivalsFPS.
• A Windows startup entry, on by default. Change it in Settings, Launch tab, Run on Computer Startup.
• Setup deletes an old portable build of RIVALSFPS.GG if it finds one in Downloads, the Desktop or the folder you ran setup from, and only a file whose SHA-256 matches the one known build.
• The Signature Bypass, a DLL loader and a plugin the game loads at startup so it will accept mod paks, in the game's Binaries\Win64 folder. It goes in only when you choose to install it, and Windows usually asks for permission. The app offers it on its card and whenever a feature needs it.
• Graphic packs, skins, sound mods, the Quality presets' map compatibility files and mods you import, in the game's Content\Paks\~mods folder. Your own mods change only when you act on them.
• Around a launch from the app, for the options you have on: the render scale (Lower Render Resolution), the resolution and Windows display mode (Stretched Resolution), the Skip Launcher flag (on by default) and the intro videos (Skip Intro Videos). Each is put back when the game closes.
• The NVIDIA driver's Marvel Rivals profile, when you launch from the app with a Quality preset (NVIDIA only) on. It is put back when the game closes.
• Color Correction writes ReShade.ini in Binaries\Win64 for a ReShade you installed yourself, and the HD Texture Pack switch (Steam only) edits Steam's manifest for the game, closing and reopening Steam.
• Windows Optimizations, only the ones you apply, each backed up first.

It connects to paks.rivalsfps.gg and GitHub for app updates, and each update is checked against a signing key built into the app before it installs. The first time you use the 3D skin preview, it downloads an extractor tool from paks.rivalsfps.gg, checks it against the SHA-256 its manifest lists, and then runs it to build previews. It also fetches the Marvel Rivals news, the player count and the Discord server's member count shown on Home. Usage stats go out under a hashed machine ID; turning off Analytics (Settings, App tab) cuts that to a check-in and error reports. The privacy policy sets out what the stats contain.

The app itself contains no code that reads or writes another program's memory, and it refuses to change game files while Marvel Rivals is running. There is no account and no payment.

Your Marvel Rivals account

Nobody outside NetEase can promise how Marvel Rivals treats a mod, and this page does not try. NetEase's published rules prohibit modifying the game client, and that includes graphic packs and skins.

• Mods the app knows can get accounts temporarily banned carry a Flagged badge in the Mod Manager, and the check runs again when you press Launch. A flagged mod comes out only after you confirm with Remove it.
• Skins and graphic packs are client side, so other players see the default costumes and textures.
• Pressing End switches Color Correction off mid-match.

Undo everything, or uninstall

1. In the app, open Settings, go to the Diagnostics tab and use Revert All Changes. It undoes what the app changed and leaves your own mods alone. Close the game first.
2. Uninstall RIVALSFPS.GG from Apps in Windows Settings, with Also undo every change made to Marvel Rivals turned on.
3. Delete %APPDATA%\RivalsFPS by hand. The uninstaller leaves it in place, along with a registry entry that holds only the app's name and icon for its notifications.