Saber denies replacing Rideshare Stimulator writers with ChatGPT

A former lead writer for Unigine’s new driving‑simulation title, Rideshare “Stimulator,” has alleged that the company’s AI tool Saber replaced her with ChatGPT during development. Stella Sacco posted the claim on Bluesky, stating that she was the original lead writer and that all passenger voices were generated by AI, suggesting a shift in the creative process that was not disclosed on Steam.

Unigine’s chief executive, Matthew Karch, has publicly denied the accusation, saying that neither Saber nor the studio has replaced any human writers with AI for the game. Karch’s statement comes after the game’s announcement last month, when Saber described it as an “immersive driving simulation game that puts you behind the wheel.” The controversy was highlighted in a recent story by The Verge, which reported on the conflicting accounts from Sacco and the company’s leadership.

The dispute underscores the growing debate over AI’s role in creative development. While Unigine maintains that its content remains human‑written, Sacco’s claim points to a possible behind‑the‑scenes shift. The outcome of the disagreement remains to be seen, but it has already drawn attention to the transparency of AI use in game production.