Xbox Gamepass On Steam Deck | Why I think it's worth it 

do you have to strictly play them through the cloud?

gamepass is def worth it on steam deck, you just buy it for a month and then for a whole month you can any game you like, gamepass has a ton of games that are at the very least playable, + all games have controller support, when in steam it is not the case sometimes, the only downside is that there is no saves from games and it is all on your device while you are paying for it, and gamepass is not that cheap gamepass is worth on steam deck, but mostly when you have a vacation of some sort for one month, you bought it and gaming for a whole month when you are free on your steam deck with all games supporting the controller fully, + somewhat a free online gaming like halo, pretty good but i dont think that paying for gamepass for a long time is worth it bc once you stop buying gamepass, it all goes away like a lucid dream, and i dont think if you buy gamepass on the same account again, it would back up all saves you have made, and one more bad thing is that gamepass isnt everywhere, like in my country it is not supported, there is no servers and that is sad, bc gamepass sometimes just comes with stuff like controller and giftcard and oh, the gamepass card is in here aswell, cool, i cant use it tho, so it just stores somewhere untill better times lol

Some EA games like Fallen Order work. It's just that you need to be online for them because of the EA App. I'm pretty sure anyway. Because I played Fallen Order on mine just fine on Wifi.

Maddens are playable but after the next version comes out....like 25 will be playable when 26 comes out due to anti cheat unless u download windows

"I'm now a PC gamer!" Welcome to the club, good sir. Glad to have you here!