Official specs from Steam

Cities: Skylines II system requirements

Minimum and recommended PC specs as listed by the developer on Steam.

Minimum

NoteRequires a 64-bit processor and operating system
OSWindows® 10 Home 64 Bit
ProcessorIntel® Core™ i7-6700K | AMD® Ryzen™ 5 2600X
Memory8 GB RAM
GraphicsNvidia® GeForce™ GTX 970 (4 GB) | AMD® Radeon™ RX 480 (8 GB)
Storage60 GB available space

Recommended

NoteRequires a 64-bit processor and operating system
OSWindows® 10 Home 64 Bit | Windows® 11
ProcessorIntel® Core™ i5-12600K | AMD® Ryzen™ 7 5800X
Memory16 GB RAM
GraphicsNvidia® GeForce™ RTX 3080 (10 GB) | AMD® Radeon™ RX 6800 XT (16 GB)
Storage60 GB available space

FAQ

What graphics card do I need for Cities: Skylines II?

Minimum: Nvidia® GeForce™ GTX 970 (4 GB) | AMD® Radeon™ RX 480 (8 GB). Recommended: Nvidia® GeForce™ RTX 3080 (10 GB) | AMD® Radeon™ RX 6800 XT (16 GB).

How much RAM does Cities: Skylines II need?

Cities: Skylines II needs 8 GB RAM at minimum, 16 GB RAM recommended.

How big is Cities: Skylines II?

Cities: Skylines II requires 60 GB available space.

Does Cities: Skylines II run on Mac or Steam Deck/Linux?

There is no native macOS version. There is no native Linux build (Proton compatibility may vary).