The credits at the end of a large game can run for the better part of an hour. The length is a fairly accurate map of how modern game production is organised.
One game is made by many studios
A headline studio rarely builds everything. Support studios handle systems, environments, cinematics and platform ports, sometimes on different continents.
Each of those teams has its own staff, its own management and its own credited roster. A single character model can pass through concept, modelling, rigging, animation and technical art at three separate companies.
The credit roll therefore lists a supply chain rather than a building. Every named block corresponds to a contract.
Art volume scaled faster than anything else
Higher fidelity multiplies the hours behind every object. A prop that once took a day now carries multiple texture layers, physical materials and detail passes.
Open worlds compound that by demanding far more props. The only way to fill them on schedule is to widen the number of hands, and every additional hand is another line.
Widening is easier than lengthening because art tasks divide cleanly. Two artists can build two rooms in parallel in a way that two writers cannot write one scene, so headcount is the lever that gets pulled.
Testing and localisation grew with the content
Quality assurance headcount tracks the amount of content to be covered. A game with hundreds of hours of possible play needs a large testing population running structured passes.
Localisation multiplies again across languages, each requiring translators, editors, voice casts and recording staff. A game shipping in a dozen languages carries a dozen small production teams inside it.
These roles were historically compressed into short unnamed lists. Naming them individually is a large part of the growth in length.
Credit has become a labour issue
Being named on a shipped game is how people in the industry prove their experience. Omission has real career consequences, particularly for contract staff and those who leave before release.
Studios have faced sustained pressure over cutoff rules that excluded departing workers. The direction of travel has been toward broader inclusion, which lengthens the roll further.
Inclusion also creates ordering disputes, since a name's position implies seniority. Resolving those disputes usually means adding categories rather than removing names, which adds length again.
Live service keeps the list open
A game supported for years keeps adding contributors after launch. Seasonal content teams, community staff and platform engineers all accrue credit that did not exist on release day.
Updated credits then include everyone who worked on the original plus everyone who has worked on it since. The roll grows because the project never formally ends.