JJ Modding Mod Library

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Browse Mods Latest Releases

Latest Releases

Fresh off the bench.

I  —  The Mod Library

Released & verified.

Each release lists the exact game version it was tested on, what it needs, how to install and remove it, and the SHA-256 checksum of the file you download.

Propertyv1.0.0

Manor Expansion

Hyland Manor's west wing grows 4 m, with three new build grids over the new floor and room for 16 employees.

To get it in game

  1. Install MelonLoader first and back up your saves.
  2. Open your Schedule I folder (Steam: right-click Schedule I > Manage > Browse local files) and drag in everything from the ZIP.
  3. Load a save: Hyland Manor's west wing is bigger, with three new build grids.
Game
Schedule I 0.4.7f12 (default IL2CPP branch)
Released
Size
165 KB
Needs
MelonLoader 0.7.3
DownloadDetails
Economyv0.1.0

Launder Limits

Raises daily laundering limits: Laundromat $5k, Post Office $10k, Car Wash $15k, Taco Ticklers $20k and Hyland Medical $50k.

To get it in game

  1. Install MelonLoader first.
  2. Open your Schedule I folder (Steam: right-click Schedule I > Manage > Browse local files) and drag in everything from the ZIP.
  3. Load a save: every business launders more per day.
Game
Schedule I 0.4.7f12 (default IL2CPP branch)
Released
Size
4 KB
Needs
MelonLoader 0.7.3
DownloadDetails
Gameplayv0.1.0

Law Toggles

F3 turns the night curfew on and off, F4 the police roadblocks. The host's setting counts in co-op, and it's remembered between sessions.

To get it in game

  1. Install MelonLoader first.
  2. Open your Schedule I folder (Steam: right-click Schedule I > Manage > Browse local files) and drag in everything from the ZIP.
  3. In game, press F3 to toggle the curfew and F4 for police roadblocks.
Game
Schedule I 0.4.7f12 (default IL2CPP branch)
Released
Size
5 KB
Needs
MelonLoader 0.7.3
DownloadDetails
Vehiclesv0.8.4

JJ's Luxury Autos

A black and gold JJ'S LUXURY AUTOS showroom replaces Rain's dealership building, with a fixed buy menu, the drivable Foxbody Mustang and 40-slot trunks.

Includes the drivable '93 Ford Mustang GT (Foxbody), $40,000

To get it in game

  1. Install MelonLoader, Rain's Car Dealership and Polyfill first (links on the details page).
  2. Open your Schedule I folder (Steam: right-click Schedule I > Manage > Browse local files) and drag in everything from the ZIP.
  3. Load a save and buy cars, including the Foxbody, at the dealership computer.
Game
Schedule I 0.4.7f12 (default IL2CPP branch)
Released
Size
18.0 MB
Needs
MelonLoader 0.7.3, Rain's Car Dealership (IL2CPP) 1.1.0, Polyfill 0.13.31
DownloadDetails
Vehiclesfor 0.8.3

1950 Buick Convertible

A 1950 Buick Convertible for JJ's Luxury Autos: on display in the showroom, $45,000, drivable once bought.

To get it in game

  1. Install JJ's Luxury Autos first.
  2. Open your Schedule I folder (Steam: right-click Schedule I > Manage > Browse local files) and drag in everything from the ZIP.
  3. Load a save; buy the Buick at the dealership computer.
Game
Schedule I 0.4.7f12 (default IL2CPP branch)
Released
Size
17.9 MB
Needs
JJ's Luxury Autos 0.8.4, Rain's Car Dealership (IL2CPP) 1.1.0
DownloadDetails
Vehiclesfor 0.8.3

1950s Van

A 1950s panel van for JJ's Luxury Autos: on display in the showroom, $30,000, drivable once bought.

To get it in game

  1. Install JJ's Luxury Autos first.
  2. Open your Schedule I folder (Steam: right-click Schedule I > Manage > Browse local files) and drag in everything from the ZIP.
  3. Load a save; buy the van at the dealership computer.
Game
Schedule I 0.4.7f12 (default IL2CPP branch)
Released
Size
16.7 MB
Needs
JJ's Luxury Autos 0.8.4, Rain's Car Dealership (IL2CPP) 1.1.0
DownloadDetails
Gameplayv0.1.0

HalfTime Production

Timed production runs at 2x: cauldrons, chemistry stations, ovens, mixers, plants, mushrooms, drying racks and employee packaging finish in about half the time.

To get it in game

  1. Install MelonLoader and the .NET 6 Desktop Runtime first.
  2. Copy only Mods\HalfTimeProduction.dll from the ZIP into your Schedule I\Mods folder.
  3. Load a save: timed production runs at 2x. In co-op, every player needs it.
Game
Schedule I 0.4.7f12 (default IL2CPP branch)
Released
Size
26 KB
Needs
MelonLoader 0.7.3, .NET 6 Desktop Runtime (x64) 6.0
DownloadDetails

Supported Games

Where we build.

About JJ Modding

An independent
modding studio.

JJ Modding makes custom game modifications: new places to build, new things to buy, and gameplay changes that make a favourite game feel fresh. It's an independent studio, not affiliated with any game's developer.

The work is judged by one thing: whether it holds up in the game. Every release is installed, played and checked against the ten-point release standard before it gets a download, and anything that isn't ready stays on the bench.

II  —  The Release Standard

Ten conditions.
No exceptions.

A mod reaches the library only when all ten are met. A website that builds or a ZIP that opens is not proof that a mod works.

  1. 01

    Feature complete

    Everything it advertises is built and working.

  2. 02

    The file exists

    The release ZIP is present and readable.

  3. 03

    Contents inspected

    Every file in the archive has been reviewed.

  4. 04

    Dependencies named

    Every requirement is listed with its version.

  5. 05

    Game version fixed

    The supported game version is stated exactly.

  6. 06

    Tested in game

    Installed and played in that game version.

  7. 07

    Features confirmed

    Each advertised feature was seen working.

  8. 08

    No blocking errors

    No known release-blocking problems remain.

  9. 09

    Download tested

    The live link serves the exact verified file.

  10. 10

    Accurate information

    Version, notes and requirements are correct.

You won't find download counters, ratings, reviews or release dates that haven't happened here. If something isn't verified, it isn't listed.

III  —  Installing

A clean install,
every time.

The general process. Each release also carries its own exact steps and requirements.

  1. 1

    Back up your saves

    Copy your save folder somewhere safe before adding or updating any mod.

  2. 2

    Install the mod loader

    Download the MelonLoader 0.7.3 installer (official, release page). Install the loader version named on the mod's card, launch the game once so it can set itself up, then close the game.

  3. 3

    Check the download

    Compare the file's SHA-256 with the one on its card. In PowerShell: Get-FileHash .\file.zip

  4. 4

    Install & play

    Add the listed requirements, follow the mod's install steps, then launch the game.

News & Updates

From the workshop.

IV  —  Questions

Good to know.

Why are there so few mods listed?

Because nothing goes up until it passes all ten conditions of the release standard. Projects that are unfinished or haven't been tested in game stay off the site.

Are the downloads free?

Yes. Mods made by other people that a release depends on are linked to their official pages instead of being re-uploaded here.

My browser or antivirus warns about a download.

Mods are unsigned and patch the game while it runs, which some antivirus heuristics flag, and new files from a small site can trigger browser warnings. Check the file's SHA-256 against the one on its card with Get-FileHash .\file.zip in PowerShell. If they match, it's the exact file that was verified and published.

Does it work in co-op?

Only if the mod's card says so. When co-op is supported, every player in the lobby needs the same mods at the same versions.

A game update broke something.

Each release is tested against the exact game version on its card. A later game update can break a mod; when that happens it's re-tested before an updated version is published.