Official specs from Steam

To the Moon system requirements

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

To the Moon release infoSteam page Check other games

Minimum

OS *Windows 98, XP, Vista, 7, 8, 10, 11
ProcessorIntel Pentium III 800 MHz
Memory512 MB RAM
Graphics1024x768 High Color +
DirectX®9.0

macOS minimum

OSOS X 10.6.8
GraphicsOpenGL 2.0 capable graphics card

FAQ

What graphics card do I need for To the Moon?

Minimum: 1024x768 High Color +.

How much RAM does To the Moon need?

To the Moon needs 512 MB RAM at minimum.

Does To the Moon run on Mac or Steam Deck/Linux?

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