What changed
Agents reduce the cost of trying a small idea. They can scaffold a scene, explain an unfamiliar API, generate test fixtures, compare a diff and turn a design note into a list of implementation tasks.
That makes the loop tighter. It does not decide which mechanic is worth keeping, whether the camera feels good or whether the player understands why they failed.
The new bottleneck is judgement
As generation becomes cheaper, selection and verification become more valuable. The developer’s job shifts toward setting a sharp quality bar, curating references, playing the build and deleting work that does not earn its complexity.
The useful public record is not “AI built this.” It is what the human asked, what the agent changed, what was tested and what was rejected.
A safe working loop
Use small tasks, repository instructions, isolated branches, generated tests and a fresh-context critic. Keep credentials and production deploy authority outside the agent’s default reach.