You have the same problem I have, it is hard to read a text and make it sound natural and interesting. Though I think you can do better. Try to put some more feeling and conviction into what you are saying and make it seem less like you are just reading a text of a screen. I would suggest that you play around with it some more, do a couple of dozen or more recordings and give yourself the freedom to do some strange things. I am sure you will be able to put more of yourself in it. As it is now there is a huge gap between your natural reactions to the games in the game fragments and your pretty flat dry style of presenting yourself in the rest of the video.