Crime Boss: Rockay City
Crime Boss support uses the official ModKit install location for new installs while still recognizing legacy loose .pak installs and UE4SS Lua mods.
Launchers
| Launcher | Support |
|---|---|
 Steam |  |
 Epic Games | |
 Xbox App |  |
Mod targets
| Target | Path under game folder | Notes |
|---|---|---|
| Official ModKit mods | CrimeBoss/Mods | Primary target for new installs. Modrex creates the expected folder structure around extracted files when needed. |
| Legacy pak mods | CrimeBoss/Content/Paks/~mods | Used for pre-existing loose pak installs and loose-triplet mods. |
| UE4SS mods | CrimeBoss/Binaries/Win64/Mods | Used for Lua mods when UE4SS is installed. Bundled UE4SS framework modules are excluded from the installed list. |
Priority
Section titled “Priority”The official ModKit target is directory-based and is not renamed for priority. Legacy loose .pak installs use numeric filename prefixes when Modrex needs to preserve order on disk.
Choosing an install target
Section titled “Choosing an install target”New Crime Boss mods install into CrimeBoss/Mods (ModKit) by default, where they merge with other
mods’ Data Table content. The older CrimeBoss/Content/Paks/~mods location has no merging - only
use it for mods that specifically need the legacy pak format.
By default Modrex installs every new mod automatically into the ModKit location. To decide per install instead, go to Settings - New Mod Installs and select Always ask. Modrex then prompts you to pick ModKit or legacy before each new Crime Boss install.
You can also move an already-installed mod between targets later: open its context menu on the Installed tab and choose Move to ~mods (legacy pak) or Move to Mods/ (ModKit). A ModKit or Legacy badge on the mod shows which target it currently uses.