Official specs from Steam

Owlboy 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 7/8/10/Vista
ProcessorDual Core
Memory1 GB RAM
GraphicsPixelshader 3.0 enabled graphics card(DirectX 10 capable graphics card)
DirectXVersion 9.0c
Storage600 MB available space

macOS minimum

OSLion 10.7.5, latest macOS release strongly recommended
ProcessorDual Core
Memory2 GB RAM
GraphicsOpenGL 3.0+ support (2.1 with ARB extensions acceptable)
Storage600 MB available space
Additional NotesSDL_GameController devices fully supported

FAQ

What graphics card do I need for Owlboy?

Minimum: Pixelshader 3.0 enabled graphics card(DirectX 10 capable graphics card).

How much RAM does Owlboy need?

Owlboy needs 1 GB RAM at minimum.

How big is Owlboy?

Owlboy requires 600 MB available space.

Does Owlboy run on Mac or Steam Deck/Linux?

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