In preparation of finally trying out the Prime series, I recently played through Metroid Zero Mission and I had a good time. It's a remake of the original Metroid that tries to bring it in line with modern Metroid games, and while it's nothing special, and you can still feel some of the outdated design of a 1986 Metroidvania every once in a while, it does a very good job modernizing the game and turning it into a fresh and fun experience.

You play as Samus Aran on a quest to stop the Space Pirates currently experimenting on the Metroid creatures. The Galactic Federation has located their base of operations in planet Zebes, so now it's up to you to go down there before they're able to grow a Metroid army to take over the galaxy.
There's not much else to this story, but I don't really think the game needs it. Samus is a bounty hunter, she's literally being paid to kill the Space Pirate leaders, so as soon as she gets to Zebes she immediately starts wrecking the place without asking any questions. It makes sense for the story, and I think it's cool!
Still, the remake adds a few cutscenes between certain scenes to help the story flow a little bit better, as well as an entire epilogue of... questionable quality, which add just a little bit of flavor to the story.

Gameplay-wise, Zero Mission is pretty fun. Moving as Samus feels nice, and combat feels quick and impactful. The game does suffer from the Game Boy curse of having not enough buttons for all its actions, so a lot of them require strange input combinations in order to work. It can be annoying from time to time, but it never affected the flow of the game that much.
The map design is really good as well, and despite all the backtracking and exploration, I never felt like I was lost while playing. I never played much of the original Metroid, but comparing both maps side to side it's easy to see how much more interesting the map design in the remake is. The game does feel somewhat linear, especially with how much hand-holding the chozo statues give, but it's still a lot of fun to navigate and explore to find secrets and upgrades.
Looking at this game through the lens of 2024, the game doesn't actually have much of an X factor or something to make it stand out, so it just feels like any other metroidvania. However, I think it's important to keep in mind that the original Metroid literally created the entire genre, so it gets a pass.

The presentation is absolutely incredible. The music is as iconic as ever, the pixel art sprites are beautiful, and the animations are very fluid and look great (except a few in the epilogue which feel weirdly out of place). The game does a fantastic job reimagining the world of the original Metroid by taking inspiration from its sequels and retroactively integrating it in the first game.
Which brings me to the fact that this is a remake, because that's basically the philosophy the entire game follows. So many aspects of Super and Fusion are clearly integrated into the game, and although it's obvious that some of these were added for the remake, they still feel right at home in the world of Metroid 1.
The remake also adds an epilogue detailing what happens after destroying Mother Brain and... it's pretty bad. Samus loses her power armor, so the epilogue is based around stealth as you try to recover it. Unfortunately, it's not the sneak-around-enemies kind of stealth, but rather, the fall-through-the-floor-and-get-chased-for-5-minutes kind of stealth. It's over quickly, and you get access to a new suit to continue exploring the world of Zebes, but boy is it rough. Not a great addition in my opinion

In conclusion: Although the original Metroid invented the whole genre, I don't think it aged too well. Metroid Zero Mission is a very welcome remake that solves this by completely rebuilding the game from the ground up, bringing it in line with more modern genre standards. Unfortunately, this is still the original Metroid, so there's not much that could be considered special or unique. Despite this, the developers managed to create a great experience that's a lot of fun, even with the limitations of the original. Simply put: It's nothing special, but it's a generically good game. 8/10
I still don't like the spin jumping mechanic tho but that's just me.