Forbes reported on October 30 that an X account called remus_r claims GTA 6 contains 201 main story missions spread over nine chapters, plus two prologues, an epilogue and flashbacks. The poster says the count leaves out side activities.
No source or evidence accompanies the claim, and the account reportedly has only a handful of posts, all about GTA 6. Notebookcheck described the number as unlikely, and Rockstar has not said how many missions the game has. The same Forbes piece separately repeats Rockstar's EDGE magazine statement that the map is roughly twice the size of GTA 5.
Why it matters: mission count is a common talking point for how long the story will run, but this figure is a single unsourced post. Treat it as a rumor until Rockstar or review copies say otherwise. It does not affect pricing, editions or bonus deadlines.