Official specs from Steam

Bloons TD 6 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
OSWindows 10 (64bit)
Processor1.5Ghz or better (x86-64)
Memory4096 MB RAM
GraphicsOpenGL 2.0 compatible, ATI, Nvidia or Intel HD
Storage2048 MB available space
Sound CardWindows compatible sound card

Recommended

NoteRequires a 64-bit processor and operating system
OSWindows 10 (64bit)
Processor2Ghz or better (x86-64)
Memory8192 MB RAM
GraphicsOpenGL 2.0 compatible, ATI, Nvidia or Intel HD
Storage4096 MB available space
Sound CardWindows compatible sound card

macOS minimum

OSOSX 11.0
Processor1.5Ghz or better (64 bit)
Memory4096 MB RAM
GraphicsMetal
Storage2048 MB available space
Sound CardMac compatible

macOS recommended

OSOSX 11.0 or newer
Processor2Ghz or better (64 bit)
Memory8192 MB RAM
GraphicsMetal
Storage4096 MB available space
Sound CardMac compatible

FAQ

What graphics card do I need for Bloons TD 6?

Minimum: OpenGL 2.0 compatible, ATI, Nvidia or Intel HD. Recommended: OpenGL 2.0 compatible, ATI, Nvidia or Intel HD.

How much RAM does Bloons TD 6 need?

Bloons TD 6 needs 4096 MB RAM at minimum, 8192 MB RAM recommended.

How big is Bloons TD 6?

Bloons TD 6 requires 2048 MB available space.

Does Bloons TD 6 run on Mac or Steam Deck/Linux?

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