Grand Theft Auto 4 already pushed Rockstar toward a more grounded, believable open world, but Liberty City apparently could have gone much further.
Former Rockstar North technical director Obbe Vermeij has revealed that an early idea for GTA 4 NPC schedules would have given pedestrians their own routines, effectively allowing characters around Liberty City to live individual lives instead of simply existing around the player.
It sounds exactly like the kind of ridiculous attention to detail Rockstar would attempt.
It also became a headache.
Rockstar Wanted GTA 4 NPCs to Have Their Own Lives
According to Vermeij, GTA 4 producer Leslie Benzies wanted NPCs to feel as though they existed independently of protagonist Niko Bellic.
The idea was to give characters schedules. An NPC could potentially wake up, leave home, travel somewhere, carry out activities and move through the city according to an established routine rather than being generated mainly for whatever was happening around the player.
That would have been unusually ambitious for an open-world game released in 2008.
GTA 4 was already a major technological jump for Rockstar. The studio was moving away from the PlayStation 2-era technology behind GTA 3, Vice City and San Andreas while simultaneously building its first major GTA title for the PlayStation 3 and Xbox 360 generation.
Adding thousands of simulated lives on top of that wasn’t exactly a small feature.
The System Became More Trouble Than It Was Worth
Vermeij said the concept became problematic during development.
Making individual routines believable creates problems almost immediately. NPCs have to know where they’re going, how they’re getting there and what happens when the player interferes. Traffic, missions, physics and random GTA chaos can break carefully designed routines very quickly.
Someone casually driving to work isn’t so simple anymore when Niko parks a burning police cruiser across the road.
Rockstar eventually reached a more important question: did players actually care?
Vermeij suggested the feature didn’t make enough difference to justify the complexity. Players generally accept that background characters in games aren’t real people with fully simulated lives. They only need to behave convincingly enough to maintain the illusion.
That distinction matters.
GTA Doesn’t Need to Simulate Everything
There’s something almost backwards about the idea.
A city can technically simulate thousands of complicated routines and still feel lifeless. Another game can use much simpler systems, carefully placed animations and unpredictable interactions and somehow feel far more alive.
Rockstar has historically been very good at the second approach.
An NPC arguing on a sidewalk, somebody dropping their coffee after being bumped, traffic reacting badly to a blocked intersection — small moments can sell the illusion of a functioning city without requiring the game to calculate what every pedestrian plans to eat for dinner.
Vermeij has spoken before about how older GTA games relied heavily on tricks and carefully designed systems rather than attempting to simulate reality completely. Hardware limitations forced Rockstar’s developers to choose what actually mattered.
Sometimes the illusion is better than the simulation.
GTA 4 Was Already a Huge Technical Gamble
The abandoned NPC system also gives some perspective on GTA 4’s development.
Rockstar wasn’t simply making a larger San Andreas.
The studio was rebuilding the experience around more detailed environments, improved physics, heavier animation systems and a much denser version of Liberty City. GTA 4 also moved the series toward a more restrained and realistic tone compared with some of the absurdity found in the previous games.
Vermeij has since said he felt that shift came with sacrifices.
In a 2026 interview, the former Rockstar developer argued that GTA 4’s more realistic direction reduced some of the gameplay variety that had defined earlier entries. He praised Niko Bellic as an especially well-developed protagonist while suggesting the game lost some of the crazier mission design found in titles such as San Andreas.
The discarded NPC schedule system fits neatly into that period of Rockstar experimentation: realism was attractive, but realism wasn’t automatically fun.
Imagine What Players Would Have Done to the System Anyway
There’s also the obvious GTA problem.
Players don’t behave.
Even the most sophisticated NPC routine would eventually meet somebody blocking a doorway with a stolen car, firing rockets into traffic or spending an afternoon following one random pedestrian just to discover where they supposedly live.
Actually, that last one probably would have become a YouTube series.
The technical achievement would have been impressive, but Rockstar apparently decided that spending enormous development resources on something most players might barely notice wasn’t worth it.
Considering how GTA is played, that’s difficult to argue with.
Could GTA 6 Bring the Idea Back?
The revelation naturally raises questions about Grand Theft Auto 6.
Modern hardware gives Rockstar dramatically more room to create detailed NPC behavior than the PS3 and Xbox 360 did during GTA 4’s development. Expectations have changed too. Players now scrutinize trailers frame by frame looking at everything from traffic patterns to pedestrian reactions.
Still, more computing power doesn’t necessarily mean Rockstar will revive the exact concept.
Vermeij’s larger point is arguably more interesting than the abandoned feature itself: developers don’t need to simulate reality when a convincing approximation creates the same experience.
GTA works because its cities feel alive while remaining playgrounds.
Give every NPC a perfectly organized life and the player will probably destroy it within five minutes anyway.