Is Modding GTA 6 Legal? The Quick Answer
Short, clear answers on the legality of GTA 6 maps, RP servers, custom MLOs and commercial creator work.

Yes - modding GTA 6 is legal on PC for single-player and private sessions. Take-Two's official modding policy permits non-commercial personal-use mods.
Never use custom maps in GTA Online. Doing so triggers the anti-cheat and results in an automatic account ban.
Selling original custom maps is permitted as long as the maps don't include ripped Take-Two IP. Free maps live on GTA 6 Maps; paid releases go to GTAMODDING.NET.
Custom multiplayer frameworks (FiveM, RAGE MP) run on private servers separate from official Rockstar infrastructure, so they're permitted.
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