Official specs from Steam

Fran Bow system requirements

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

Minimum

OS7+
Processor1.7 GHz Dual Core
Memory2 GB RAM
GraphicsNVIDIA GeForce GTX 260, ATI Radeon 4870 HD, or equivalent card with at least 512 MB VRAM
Storage5 GB available space
Sound CardDirectX Compatible Sound Card

macOS minimum

OSGame Maker Legacy: 10.11 through 10.14 only - Fran Bow: 10.15 (MacOS Catalina) and above 64-bit OS
ProcessorIntel Core Duo
Memory2 GB RAM
GraphicsATI Radeon HD 4850, NVIDIA GeForce GT 120, or equivalent card with at least 512 MB VRAM
Storage5 GB available space
Additional NotesFor Macs still running the 32-bit MacOS (MacOS 10.11 through 10.14), select the Legacy Fran Bow choice when running the game. For Macs running a 64-bit OS (MacOS 10.15 Catalina and above), select the Fran Bow choice to run the game.

FAQ

What graphics card do I need for Fran Bow?

Minimum: NVIDIA GeForce GTX 260, ATI Radeon 4870 HD, or equivalent card with at least 512 MB VRAM.

How much RAM does Fran Bow need?

Fran Bow needs 2 GB RAM at minimum.

How big is Fran Bow?

Fran Bow requires 5 GB available space.

Does Fran Bow run on Mac or Steam Deck/Linux?

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