Hi!😀 Yes and no. It depends on how you do it. I see many playing a video by skipping through all dialogues and sequences and go straight to the game itself. If you try to read and understand what you are shown, yes you can learn a lot of useful words but be careful because some games have bad translations and don't forget that you must consider what kind of game you're playing. Maybe the language is a little different or fancy or it takes place in another world or time. Focus and be careful and patient.