Can you sell Xbox games?
Not that in the end it is the case that the game can only be installed once and, if you sell it, the new owner can no longer install it because it has already been installed elsewhere
Of course it works as long as it is a disc.
Xbox One games on the disc yes. No matter what format it is (the game disc itself, a normal installation disc, or a DLC installation disc. Digitally purchased games, on the other hand, are bound to your account forever and can't be sold. However, this is standard with almost every system No matter whether Playstation, Xbox, Nintendo, or on PC.