Sorry for the gajillionth post of this nature but I'm v much a layman and nobody has asked about my specific spec's yet.
I have an early-2014 Macbook Air, but it was fully tricked out at the time. I see I don't meet the 2.3 GHz or graphics requirements as listed. I realize it's all a guess at the point, but if you're reasonably knowledgable, how likely do you see it that I'd be totally F'd, even with all graphics settings set to the minimum?
MBA early 2014
processor: 1.7 GHz Intel Core i7
memory: 8 GB 1600 MHz DDR3
graphics: Intel HD Graphics 5000 1536 MB
Aspyr has this on their site:
Minimum System Requirements
PRELIMINARY REQUIREMENTS:
Operating System: 10.11.6 (El Capitan) and 10.12 (Sierra)
Processor: Intel Core i5 (4 cores)
Processor Speed: 2.7 GHz
Memory: 6 GB
Hard Drive Space: 15 GB
Video Card (ATI): Radeon HD 6970
Video Card (NVIDIA): GeForce GT 650
Video Card (Intel): Iris Pro
VRAM: 1 GB
Peripherals: Macintosh mouse and keyboard, Steam Controller (optional)
I'm guessing the Intel 5000 is below Iris. Steam has a 2 hour return window, so you could always try. My understanding is you'll be able to play in strategic map mode also, so perhaps.