A lucky find at an Edinburgh car boot sale has turned into one of the most fascinating Grand Theft Auto discoveries in years. For just £5, a gamer picked up what looked like an old Xbox 360 development console. After taking it home and digging deeper, they realized it wasn’t a normal retail system at all, but an Xbox 360 XDK (development kit) labeled “Rockstar North Ltd.” And sitting on its hard drive was something no GTA fan expected to see in 2026: a massive 118GB beta build of Grand Theft Auto IV dated November 2007.
The buyer, known as Janamatant, shared photos and details with the GTA community after discovering the console was running a developer operating system and included a 120GB drive. What made the story explode is that the drive reportedly contained a single huge file: an early GTA IV build from late 2007, months before the game’s release. The archive was later shared online, and fans quickly began combing through the files, calling it one of the biggest breakthroughs in the long-running hunt for GTA IV beta content.
As people began exploring what’s inside, the early findings pointed to major features and assets that never reached the final version of GTA IV. One of the most notable is an early ferry system. Longtime fans may remember boats appearing in early trailers, sparking years of speculation about how Liberty City’s waterways were originally meant to work. The beta build appears to include full models and textures for ferries designed to transport NPCs across the map, suggesting this wasn’t just a concept but an active feature deep enough into development to be playable or close to it.
It isn’t only transportation that looks different. The beta also reportedly includes radio-related assets that hint at a substantially altered in-game soundtrack plan, including an unreleased list of radio stations along with songs and DJ lines that didn’t make it into the launch version. For a game as defined by its radio stations as GTA IV, even small differences are the kind of detail fans love to study and compare.
The most talked-about discovery, however, is the one GTA players have debated for years: evidence of a zombie mode. The beta build includes early zombie models, animations, hospital beds, and references suggesting a scrapped minigame labeled “Z: Resurrection.” For many fans, this is the closest thing yet to confirmation that Rockstar experimented with a zombie-themed gameplay idea during GTA IV’s development—something that always sounded plausible but lacked hard proof.
Adding to the credibility of the find, Rockstar’s former technical director Obbe Vermeij confirmed that the Xbox 360 development kit is legitimate. He also backed up the story around the ferry system, explaining it was cut late because it created too many problems with pedestrian and vehicle behavior, along with physics and collision issues caused by NPCs and cars effectively sitting on a moving vehicle. Even though the ferries appeared in a trailer, the team decided it was safer to remove them than risk unpredictable gameplay.
When it came to the zombie content, Vermeij was far more cautious, describing the zombies as an internal test rather than a fully planned feature. Still, the presence of so many related assets in the 2007 beta build is enough to fuel renewed debate about what “Z: Resurrection” might have looked like if it had progressed further.
For the GTA community, discoveries like this are rare because they offer a genuine time capsule: a snapshot of how a landmark open-world game evolved before release, complete with ambitious systems, alternate audio plans, and experimental modes that never saw the light of day. As fans continue to analyze the files, more differences and cut features may surface—making this £5 Xbox 360 dev kit purchase one of the most unexpected and valuable finds in Grand Theft Auto history.
