Installing SLRR is not as simple as dragging a file into a folder. Because it overrides core game scripts, you need to follow specific steps. Note: These instructions assume you own a legitimate copy of Ship Simulator Extremes on PC.
Warning: Always back up your Ship Simulator Extremes folder before installing major mod packs.
Unlike modern games where you might download a single car mod, SLRR mod packs are massive collections. A "Mod Pack" typically includes: slrr mod pack
Why use a pack? Installing mods individually in SLRR is difficult due to file conflicts and "part ID" limits. Mod packs do the hard work for you by ensuring all the cars and parts included are compatible with one another.
Be careful when Googling SLRR mods; many sites are cluttered with adware. Installing SLRR is not as simple as dragging
SLRR is an old game. It does not like modern Windows file structures. Follow these rules to avoid the dreaded "Runtime Error."
Step 1: The Directory Rule
Do NOT install the game in Program Files or Program Files (x86). Why use a pack
Step 2: Extracting
Most packs come in .rar or .7z format. Use WinRAR or 7-Zip to extract the folder to your chosen drive.
Step 3: The "Cars" and "Riders" Folders
Most packs are ready to play immediately. However, if you download an "Addon" pack, you will need to paste the Cars and Riders folders into the main game directory and overwrite existing files.
Step 4: Compatibility Mode
Right-click the game executable (StreetLegal_Redline.exe), go to Properties > Compatibility, and check: