> Indie game studios use some of the same engines (Unity, Unreal) as AAA, and those engines definitely require GPUs.

That's funny, because I have no GPU on any of my machines, yet I can run games using Unity, Unreal, etc. I can even run at least some AAA games, albeit poorly.

Most people I know don't have a GPU, but most do play modern games on their computers.

Edit: I think I should clarify what I'm saying, since someone downvoted me and the only reason I can think for why that is is because of this confusion. I'm talking about dedicated GPUs here, not integrated ones. The topic of conversation was around dedicated GPUs.