Courseplay_FS25: the Lua source behind the Farming Simulator 25 Courseplay mod

A source repository for a Farming Simulator 25 mod, written in Lua

Courseplay_FS25 is the GitHub home of Courseplay for Farming Simulator 25. The primary language is Lua, which is the scripting language the game itself exposes to mods, and the repository carries a modDesc.xml descriptor plus a single named Lua entry point, Courseplay.lua, alongside a folder of scripts. The audience is narrow and self evident: Farming Simulator 25 players who want the Courseplay mod installed in their game, and modders who want to read or follow the code behind it. The project is not a general purpose automation tool and does not run outside the game. What sits on GitHub is the mod source together with its build metadata and its community infrastructure, not a separate application that you would install on Windows or Linux. The README is explicit that the repository and the Giants ModHub listing are the only official sources for Courseplay, and warns that copies found elsewhere are scams.

The repository layout is small: one descriptor, one entry script, four folders

The top level of the tree is short enough to describe in full. There is the README, the LICENSE, a Contributors.md file,.gitignore, and a.github folder for the repository's own automation. The mod payload is Courseplay.lua, modDesc.xml and icon_courseplay.dds, the last being the icon the game shows in its mod list. Three directories carry the working parts: config, scripts and translations. The translations folder is the obvious one, since a mod shipped to players in many languages needs its user facing strings separated from logic, while the config folder holds the mod's configuration surface and scripts holds the implementation beyond the single top level entry file. One other entry, a reload.bat file at the root, points to a development workflow rather than something a player needs, and knowing that is useful before you try to make sense of the tree.

Getting the mod: GitHub releases and the Giants ModHub, and nothing else

There is no package manager, no script to run and no build step that the project documents for players. Installation is a download of a release archive. The README points to the latest developer version on the GitHub releases page, and names the artefact directly: the file FS25_Courseplay.zip. The same page carries a direct download link for that archive, and the badge at the top of the README points to the ModHub listing, which carries the mod identifier in its link. Two channels are offered and the project says they are the only official ones, with the warning that any other download is a scam. The project does not document a further installation procedure beyond that download, so what a reader can verify from the repository is limited: the archive is named FS25_Courseplay.zip, the tree contains the modDesc.xml descriptor and the icon_courseplay.dds image that the game shows in its mod list, and the Courseplay menu inside the game is where the options live. In other words, the repository describes what the mod is made of and where to get it, but leaves the placement of the unpacked folder in the game installation to the game's own mod handling.

The default build is a developer version and the project says so loudly

The README spends more words warning about the build than explaining features, and that emphasis is deliberate. It states that you are using a developer version which may and will contain errors, bugs, mistakes and unfinished code, and it uses a deliberately alarming metaphor about your computer exploding to make the point that alpha, beta and developer builds are not release builds. It adds a disclaimer that the team takes no responsibility for destroyed crops, deleted save games or similar in-game losses. Two practical consequences follow for anyone deciding what to install. First, the release linked from the README is not the same thing as a curated stable build, so a failure after installing may be a known rough edge rather than a broken install. Second, the project asks for specific feedback in return: report the version number, use only the vehicles actually needed instead of a dozen at once, state which vehicles are involved and what action was intended, and attach the log posted to Gist or PasteBin. The repository wiki is pointed to for how to write a proper bug report, and the in-game menu and the help website are listed as further documentation.

Where the actual documentation lives, in the game and on two video playlists

Function documentation for the mod is not held in the repository. The project points to its own website, the Courseplay Help pages hosted under the courseplay.github.io organisation for the FS25 version, and to the in-game Courseplay menu, which is described as documenting the functions as well. Two community tutorial playlists are linked: one in German by Mario Hirschfeld and one in English by Argsy Gaming. For a mod that acts on vehicles and their intended actions inside a simulation, video is arguably a better format than text for showing the driving and working sequences, and that is what the project has leaned on. The practical consequence for an engineer is that the repository README is a distribution and support document, not a specification. If you want to know what a given control does, the help site and the in-game menu are the places to look, and the wiki is where the reporting format is defined. The README does not document configuration keys, and it does not describe an API that other mods could call into.

GPL-3.0 governs reuse, and the repository keeps its own contributors list

The licence field for the repository is GPL-3.0, and a LICENSE file sits at the root, so the terms are the standard GNU General Public License version 3 rather than a custom agreement. That matters for anyone who plans to read the Lua, adapt it, or ship a derived version inside their own mod package, because the GPL carries obligations around distribution of modified versions and the notice text. This is a statement of what the project publishes, not legal advice; anyone with a specific distribution plan should read the LICENSE file itself and, if the situation is unusual, take their own advice on it. Alongside the licence, the repository maintains a Contributors.md file at the root and a .github folder, which together indicate an active contribution process with recorded credit rather than an anonymous drop. The README also carries donation links to PayPal and Buy Me a Coffee, described plainly as support for work done in the team's own free time, so the project is funded by individuals rather than by a company behind the game.

Release history and the cost of staying current

The recorded releases are tightly spaced patch versions under the 8.1.0 line: 8.1.0.3 published on 2025-12-14, 8.1.0.2 on 2025-12-12, and 8.1.0.1 on 2025-11-12. The last push to the repository was on 2026-09-02, and the project is not archived, so work continues on it even though the tagged releases stopped in the previous year. That gap is normal for this kind of mod and carries a practical cost for users: because the mod runs inside a commercial game that ships its own engine updates, a mod built against one game build can stop working after a patch, and the fix has to come as a new archive rather than as a configuration change on your machine. There is no compatibility matrix in the repository and no documented rollback path, so keeping an older archive from a working release is the only safeguard available to a player who values a stable save. The 8.1.0.x numbering also suggests the team treats the mod as a single product line rather than a set of separately versioned components.

Editorial conclusion

Courseplay_FS25 is worth adopting if you play Farming Simulator 25 and want the mod, and worth reading if you want to see how a Lua mod for a licensed game is structured, since the layout is small enough to read in one sitting. It is not a tool for anything outside Farming Simulator, and the default downloadable build is explicitly labelled a developer version that may contain errors, so verify the release you install and post the log to the issue tracker if something breaks. Before redistributing anything derived from the repository, read the GPL-3.0 LICENSE file in the root, since the project publishes it without further terms attached.

Frequently asked questions

Official sources

1. Courseplay/Courseplay_FS25 on GitHub
2. Issues
3. License: GPL-3.0
4. README
5. Releases