Simulation Technology Guide Hub
How the Ghost system, object pooling and persistent world state keep the dense city running.
What the confirmed data means
These systems explain why a large life-sim city can remember schedules and objects without fully rendering everything at once. They are technical facts from the official optimization report, but they also help players understand district transitions, NPC arrival behavior and hardware tradeoffs.
How to use this information
The pages use a layered model: background simulation, in-district preparation and full visible simulation. Release testing should measure what players actually notice—transition stutter, memory use and persistence—without claiming access to internal code or promising a fixed frame rate.
Publication boundary
Optimization methods describe developer implementation, not guaranteed performance on every PC. Hardware results require the final build, driver version, resolution and settings.
Sources and verification
Last reviewed: July 26, 2026