In terms of data usage, it will naturally vary according to your quality preferences. If you're aiming to perform Madden NFL 21 using Stadia Pro at 4K then you're likely looking at about 16-20GB of data usage per hour. As this is a game you can play solo, online, or locally with buddies on the same Stadia link (via Chromecast with multiple Stadia controls or on mobile or a PC browser with numerous controllers plugged in), it is not possible to know just how much information it will suck up since hours will vary for everyone.
I played with Madden NFL 21 on Chromecast through my 4K TV, on PC at a Microsoft Edge Browser, and on cellular with the Razer Kishi and utilizing only touchscreen controllers. Remarkably, Madden is really very playable using touchscreen controllers as soon as you get used to where the virtual buttons are situated. I am still frustrated that I can't remap or change where the buttons are in my display since doing things such as holding R2 to sprint are embarrassing when you'd like to also be able to cover up the ball before an impact or immediately juke with the ideal stick. When it comes to the basics of playing though, you can finish an whole game on Stadia utilizing only touchscreen controllers should you wanted or at the very least do some management functions such as admin work or undergo transaction provides.
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