After verifying the game path, the installer would open a window displaying a list of available mods. From here, you could simply click "Install" next to any mod you wanted. Once installed, you would ensure the mod was "Enabled" (a checkbox would indicate it is active). After that, launching Hollow Knight as usual would load the game with your selected mods active.
You may receive a warning from Windows or your antivirus software. This is common with fan-made executables. Users report that it is safe. radiance.host mods modinstaller.exe
in antivirus software because of how they inject code into the game Steam Community After verifying the game path, the installer would
Hollow Knight is a masterpiece of atmospheric exploration, punishing combat, and intricate lore. However, once you have finished exploring every corner of Hallownest, the community-driven modding scene offers hundreds of hours of new content. While there are newer methods available in 2026, the (often simply referred to as the Radiance Mod Installer or earlier versions of the Scarab manager) has been a cornerstone tool for bringing custom bosses, quality-of-life improvements, and randomizers to the PC version of the game. After that, launching Hollow Knight as usual would
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Before running the executable, upload it to a service like VirusTotal. It is common for mod tools to trigger "False Positives" due to how they interact with game files, but a clean scan provides peace of mind.