A massive data leak involving approximately 192GB to 200GB of Rockstar Games internal files surfaced online on September 18, 2026, offering a detailed look at years of cancelled development plans and early assets for the upcoming Grand Theft Auto VI. The archive appears to be a complete version of a source code repository that was only partially disclosed during a security breach in late 2023.

The leaked data provides concrete evidence for the long-rumored single-player expansions for Grand Theft Auto 5 that were eventually scrapped in favor of Grand Theft Auto Online updates. Chief among these is a “massively expanded” version of Liberty City, the setting of GTA 4, which was once intended to be ported into the GTA 5 engine.

While the full environment is not present in a playable state, modders have begun reconstructing the planned map’s scale. Modder TJGM successfully visualized the Liberty City outline by isolating “shoreline audio zones” found within a specific file titled dlcliberty_game.dat151.rel. These zones, which define where ambient water sounds play, reveal a landmass significantly larger than the version seen in 2008. The presence of internal tags such as az_dlc_lib_new_terrain_test suggests that Rockstar was actively testing new terrain configurations before the project was shelved.

The “Agent Trevor” Expansion and Scrapped Missions

The leak also contains exhaustive mission lists for the “Agent Trevor” DLC, a narrative expansion that would have followed the protagonist Trevor Philips in a high-stakes espionage plot. According to the recovered source files, the expansion included arcs involving the CIA and a mission set in space.

Specific mission titles found in the cache include “True Lies,” “Jetpack,” “Satellites,” and “Underwater Sub-Base Attack.” These files suggest a level of cinematic scale that matches Rockstar’s major single-player releases, confirming that the developer had moved well beyond the conceptual stage before shifting resources to the live-service components of the game.

Grand Theft Auto VI and Leonida Map Assets

Beyond historical data, the archive contains assets related to “Project Americas,” the internal codename for the next entry in the series. Data miners have identified low-resolution 3D models and terrain renders for the Leonida (Vice City) map, with file timestamps ranging from 2020 to 2022.

These assets include early layouts for the Leonida international airport and the city’s main stadium. While these models represent work-in-progress versions of the game from several years ago, their presence in the leak provides a technical baseline for how the map evolved in the lead-up to the official release.

The timing of this disclosure is particularly notable, arriving exactly two months prior to the scheduled November 19, 2026, release of Grand Theft Auto VI. While Rockstar Games has not issued a formal statement regarding the 192GB archive, the leak follows a string of security challenges that have impacted the studio throughout the latter half of the year.