Rockstar Games just published a formal set of mod guidelines. Single-player modding stays welcome, but the new rules draw hard lines that put much of the unofficial Grand Theft Auto port scene squarely offside.

The page codifies positions Rockstar has mostly held for years, now written down in one place. Most of it is unsurprising, to be honest. It's just that Rockstar has made their stance loud, clear and official. For example, single-player mods that respect other people's IP and stay away from online services are fine, with Rockstar even allowing modders to disable anti-cheat for Story Mode. The restrictions are where it gets interesting for anyone following the modding scene.

The rule that matters most here bars modding Rockstar's games to run on consoles, hardware or platforms where they were never officially released. This is the exact category of the native Switch port of Grand Theft Auto V, the Wii and GameCube builds, the reGTA 3DS collection and the recent iPhone effort we have been covering all year. Under the new guidelines, all of them are unauthorized.

What Rockstar's mod guidelines prohibit

Rule
What it targets
No unreleased-platform ports
The Switch, Wii, GameCube and other unofficial ports
No story extensions
Mods that expand official plots, missions or characters
No cross-title mashups
Combining maps or characters between GTA games
Multiplayer only via the Creator Platform
Unofficial online mods outside FiveM
No cheat menus in online
Software that disrupts official multiplayer
Strictly non-commercial
Paid mods outside the official platform
No crypto or gambling
NFTs, tokens, loot boxes, real-money gambling
No unlicensed likenesses
Reusing voice performances or real people's likenesses

The main restrictions in Rockstar's new mod guidelines and what each one targets.

The GTA V Switch port is the most exposed of the bunch. It's an unauthorised port that reportedly relies on the GTA V source code that leaked years ago and resurfaced online this month, putting it about as far outside Rockstar's stated rules as a project can get.

The ports are not the only target. The guidelines also rule out mods that extend Rockstar's official stories or missions, mods that combine maps and characters across different GTA games and any multiplayer modding outside Rockstar's official Creator Platform. There is a firm monetization line too. Modding must stay strictly non-commercial unless it runs through that platform, with a specific ban on crypto, NFTs, loot boxes and real-money gambling.

The timing points straight at Grand Theft Auto VI. Rockstar is drawing these lines right before its biggest launch ever. The shape of them says a lot about the modding era it wants. Multiplayer modding and paid mods are funneled into the official Creator Platform, the FiveM-based system Rockstar built after acquiring the FiveM team, while single-player modding stays tolerated but boxed in. When GTA 6 eventually reaches PC, the community that made GTA V look like a modern game will be working under these rules from day one.

None of this means takedowns are imminent. Plenty of the projects they cover have run for years, but Rockstar has made it clear that it's within its rights to take down any mod "at any time for any reason" and noting that nothing in the page waives its or Take-Two Interactive's right to enforce its IP.

Projects like the Switch port now sit clearly on the wrong side of that line, whether or not Rockstar acts on it.

So the modding scene that has kept GTA V alive and everywhere for over a decade now has an official rulebook. Single-player creativity is safe. The ports, the mashups and the paid mods outside Rockstar's platform are not. With GTA 6 on the way, those are the rules the next decade of GTA modding will start from.