This is not big, but I got fortnite on iOS using game streaming. I don’t play fortnite, so this is only a proof of concept. It should work which it will, why wouldn’t it? Here is me running fortnite on iOS with shadow which is a $11 a month Cloud pc subscription that Linus reviewed a once:
the funny thing is that it uses the shadow client which is available from the App Store. Apple may (probably not) remove it. This does require Internet connection so technically it’s not running on the device. You could also use GeForce now. But shadow can be used for more than gaming so I