# PGSimCity · How PostgreSQL Works, in 3D

PGSimCity is an independent, non-commercial educational visualization of PostgreSQL internals. It is not affiliated with, sponsored, endorsed, or approved by Electronic Arts Inc. SimCity is a trademark of Electronic Arts Inc.

A working model of the PostgreSQL engine

loading the city code…

**Early, unreviewed prototype.** It almost certainly contains inaccuracies in both the model and explanations. Found one? [Open an issue](https://github.com/NikolayS/PGSimCity/issues/new) or send a [pull request](https://github.com/NikolayS/PGSimCity/pulls).