Official specs from Steam

Planet Coaster system requirements

Minimum and recommended PC specs as listed by the developer on Steam. Native macOS version available.

Minimum

NoteRequires a 64-bit processor and operating system
OS *Windows 7 (SP1+)/8.1/10 64bit
ProcessorIntel i5-2300/AMD FX-4300
Memory8 GB RAM
GraphicsnVidia GTX 560 (2GB)/AMD Radeon 7850 (2GB)
DirectXVersion 11
Storage8 GB available space

Recommended

NoteRequires a 64-bit processor and operating system
OS *Windows 7 (SP1+)/8.1/10 64bit
ProcessorIntel i7-4770/AMD FX-8350
Memory12 GB RAM
GraphicsnVidia GTX 980 (4GB)/AMD R9 380 (4GB)
DirectXVersion 11
Storage8 GB available space

macOS minimum

OS10.14 (Mojave) or later
ProcessorIntel Core i5 (4 cores)
Memory6 GB RAM
GraphicsVideo Card (AMD): Radeon R9 M290 | Video Card (NVIDIA): GeForce GTX 775M
Storage15 GB available space

FAQ

What graphics card do I need for Planet Coaster?

Minimum: nVidia GTX 560 (2GB)/AMD Radeon 7850 (2GB). Recommended: nVidia GTX 980 (4GB)/AMD R9 380 (4GB).

How much RAM does Planet Coaster need?

Planet Coaster needs 8 GB RAM at minimum, 12 GB RAM recommended.

How big is Planet Coaster?

Planet Coaster requires 8 GB available space.

Does Planet Coaster run on Mac or Steam Deck/Linux?

Yes, there is a native macOS version. There is no native Linux build (Proton compatibility may vary).