@Crazycrab already said just about everything I would. Reading this was enjoyable, but functionally, it is a walkthrough (and hey, I really could've used this type of thing back in the days when I was failing utterly at Zelda II as a kid).
What you linked to with your short overviews of the different games is definitely more like mini-reviews. You shared your thoughts about different aspects of the games (and made me lol a few times - "Link looks like a penis with gangrene" hahah).
Along with opinions, in a review, you can also comment on other peoples' opinions, or on how a game fits into the context of a cultural landscape, what technological leaps it has made, how it compares to related games, what the experience of playing it felt like, etc. The main thing really is just to share your unique perspective.