How do you do that? If you don’t mind me asking.

I’d say it is cool but very expensive. One SD Card for each game would not be cheap, specially if the game is big, like 100gb or more.

GOG. The games you buy there are DRM free and are actually yours. You can even backup then in a external HD, personal server, etc.

So I guess you could pick one, install inside a SD Card and it would be like a Switch card. Cool idea.