A:AnswerYes, but it does not support controller inputs natively so you will have to use a keyboard/mouse or map the controller buttons to keyboard inputs.
A:Answer1 It remains to be seen what Asus's policy will be on end users opening the device on their own.
2 Any USB C hub should work with this, I know that Asus is supposed to release external GPU's for this device, but I do not know how those work yet.
A:AnswerVRAM is not upgradeable. The only upgradeable part is the SSD.
Any game should run at low settings though, higher than that will depend from game to game. Hogwarts Legacy runs even on the Steam Deck which is considerably underpowered compared to the Rog Ally.
A:AnswerIt’s a full blown when does 11 PC, so I can run most games, so long as the support of controller.
Technically games that require a mouse and keyboard can work, but will probably be cranky, or you can plug it in to a monitor with the right hook ups and use it with a mouse and keyboard, but that it’s not portable.
But the call of duty games should all run