A:AnswerWhile the device's internal storage may not be expanded, Surface Go 2 has a MicroSD memory card slot which will allow you to expand its total storage to 256GB.
A:AnswerYes it can be taken out of S Mode. Keep in mind running S Mode helps the CPU not get out of control. Also note once taken out of S Mode it can not be turned back.
A:AnswerUnknown for legends but it should be able to match at at least the minimum requirements of most games. I would go to the game website check what the minimum requirements are. This tablet should be able to run a lot of games but look first before buying the game.