Google Gemini AI leaks private game character name

A solo independent game developer has reported that Google's artificial intelligence system revealed the name of an unreleased character from their game, information the developer says existed only within a private Google Doc. The incident, which occurred in early August 2026, has reignited concerns about data privacy and the training practices of large AI models.

The developer, known as Klub Kofta Studio and the creator of the Steam tower defense game Operation Octo, discovered the leak after a player in the game's Discord community shared screenshots of a conversation with Google's Gemini AI. The player had been asking the AI questions about the game, and some responses contained obscure details. Intrigued, the developer asked the player to inquire about future content. The AI then reportedly generated the exact, highly specific name "Vantage Tripod," a character that had not been announced publicly.

According to the developer, this name had never been shared in the game's files, source code, or with any players. The only digital record was within a private Google Doc that had not been shared via a link or posted anywhere online. The developer expressed bafflement, stating the...