> As of last month, Steam reports that >15% of their customers still have 4GB VRAM or less...

Based on my testing (and the fact that Factorio officially runs on the OG Switch) Factorio fits comfortably in less than 4GB of VRAM. So, the relevant percentage is 9.6%... the slice of their customers that have 3GB of VRAM or less.

But, the slice is actually smaller than that! The minimum graphics requirement listed on the Steam Store page is

> DirectX 11 capable GPU with 1GB VRAM - GeForce GTX 750 Ti, Radeon R7 360 or Intel UHD Graphics 730

Given that Wubi actively tested on hardware with 1GB of VRAM [0] and that they've proven themselves to be highly-technical people that sweat the details and talk about it both publicly and in-depth, I believe that to be an accurate minimum system requirement. Requiring 1GB of VRAM excludes 2.7% of those who chose to do the Steam Hardware survey.

Given that very few OpenGL/D3D/Vulkan 3D games [1] released in the past like ten years will run with 512MB of VRAM, 1GB of VRAM seems to be a fine cutoff point to me.

[0] <https://factorio.com/blog/post/fff-281>

[1] Yes, I'm aware that Factorio is a 2D game. The comment that started this discussion claimed that Factorio "uses so much VRAM" because it's a 2D game rather than a 3D one.