GTA 6 Could Have Several Times More Bugs Than GTA 4, Sparking Debate

According to X user Urban GTA 6, former Rockstar technical director Obbe Vermeij recently shared how many bugs two classic GTA games carried during development: roughly 70,000 for Grand Theft Auto: San Andreas and about 140,000 for GTA4. These figures do more than satisfy curiosity. They underline a broader point now shaping discussion around GTA6: the bigger and more complex an open world becomes, the harder it is to test and stabilize.

Set against the series' growth, the increase is easy to understand. San Andreas was already hugely ambitious for its time, with a large map, long mission chains, and a broad vehicle sandbox. By GTA4, city density, physics systems, and cinematic storytelling had all moved up a notch, so a doubled bug count is not especially surprising. That says less about code quality than it does about scale, and what naturally happens when a giant sandbox keeps adding rules, interactions, and edge cases.

Rockstar pushed that even further in Grand Theft Auto V, where Los Santos expanded into a vast map packed with detailed interactions, while GTA Online added another layer of systemic complexity. In open-world design, the hardest part is rarely just laying out streets. It is making traffic, pedestrians, police, interiors, and mission triggers all work together. The more a map behaves like a living city, the more likely chain-reaction problems become during development.

That is why the real question around GTA6 is not just how much bigger it gets, but whether that scale stays manageable. Based on the trailer and reported leaks cited in the original report, GTA6 is expected to feature the largest map in the series, the highest number of interior spaces, and the most complex NPC ecosystem Rockstar has built so far. Vermeij did not work on GTA6, but based on past experience his point is simple: even with more advanced engines and development tools, bug fixing remains extremely difficult once a game's scale balloons.

The important point is not any one headline number, but the direction modern AAA sandboxes have taken. Add one more interior, and you may affect NPC pathfinding, event scripts, vehicle spawning, and mission pacing. Change one ecosystem rule, and new issues can appear somewhere players never directly see. Late in development, projects like this are often less about chasing isolated bugs than keeping the whole world stable.

Those historical bug counts have done two things at once: they have raised expectations for GTA6's scale, and they have also pushed more players to accept that polishing a launch version of a game this large will not be easy. The most useful signals in Rockstar's future reveals will be details on interior interaction, NPC behavior, and map density. The richer those systems look, the heavier the testing burden usually is. That is not cynicism. It is simply the engineering reality of where giant open-world games are now.