Official specs from Steam

Slay the Spire system requirements

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

Minimum

OS *Windows XP, Vista, 7, 8/8.1, 10
Processor2.0 Ghz
Memory2 GB RAM
Graphics1Gb Video Memory, capable of OpenGL 3.0+ support (2.1 with ARB extensions acceptable)
Storage1 GB available space

macOS minimum

OSOSX 10.14+
Processor2.0 Ghz
Memory2 GB RAM
Graphics1Gb Video Memory, capable of OpenGL 3.0+ support (2.1 with ARB extensions acceptable)
Storage1 GB available space

FAQ

What graphics card do I need for Slay the Spire?

Minimum: 1Gb Video Memory, capable of OpenGL 3.0+ support (2.1 with ARB extensions acceptable).

How much RAM does Slay the Spire need?

Slay the Spire needs 2 GB RAM at minimum.

How big is Slay the Spire?

Slay the Spire requires 1 GB available space.

Does Slay the Spire run on Mac or Steam Deck/Linux?

Yes, there is a native macOS version. A native Linux build is available.