Introduction!
Yu-Gi-Oh! GX is has many great characteristics about it. Whether it was game play, story, or graphics. I will separately discuss the categories down below. The game begins as you being the new kid in Slifer Red dorm. In this dorm there are some really bad players and then around every month it should commonly appear, an exam is given to test your abilities. There are parts of the test, but I won't say anything except that it is a questionnaire, situation, and a practical exam. If you can get over a certain score, and you may be able to get a better dorm, like Obelisk Blue or Ra Yellow. Being in a different dorm is different because you will be able to battle new players and probably better ones.
Graphics 9/10
Now the graphics are astonishingly good! The characters appear like how they look in the anime. The cards' design look exactly the same. The cards are identical to the ones in the show and real life. It has a considerable amount of detail to the cards. The cut scenes are superb for a GBA game.
Sound 1/10
The sound in this game doesn't really impress me. It was really repetitive and a bit of a nuisance. When I first heard the music, it was alright initially, but as it progressed it got repetitive. It would've been great and would've got a better rating, but as soon as it repeated I died on inside and just listen to some of my own music. There were some different battle music, but that wasn't that compelling to me. If I could it would've been a 1.5/10 instead of  a 1/10.
Addictiveness 8/10
This game is really addicting. There are so many ways to fuse cards and build decks. I just love building just random decks and trying to win against duelers. You just want to be Ash Ketchum of Yu-Gi-Oh and collect all the cards. But once you've done everything you could it sort of bores you. Then you realize how long you've spent your time on this video game of cards, but I'm kidding that satisfaction of collecting the cards is just like those satisfaction videos on YouTube.
Story 8/10
The story is just you battling students and becoming the best. You make your own story. The exams were a nice touch. Along with the tournaments and the end of the year duels. Those were one of the best parts of the game. Then again its your own story become King of Games if you like.
Depth 8/10
Elaborating on what I had cited in my other paragraph the story was quite detailed. The way theirs tournaments and end of year duels. Also on how time passes. You can travel somewhere then you waste a day going there a missing out on a duel. The map is not free roam, so you can't just wonder on and about. The time feature is really decent and the tournaments are just amazing along with the end of the year duels.
Difficulty 8/10
When you first start in the game, you have barely and cards. The cards you receive are the worst of the worst. I may exaggerated a bit, but the cards are pretty bad. The other players have like cards another tier above even better than yours. As the game progresses it gets a little bit easier.
Overall 8.8/10
This game has to be one of the best Yu-Gi-Oh! GBA games out there. The graphics had to be one of the best I've seen as a GBA game. Not like Pokemon games excluding the 3DS ones.  If you are a Yu-Gi-Oh fan you must play this game. The music must be worst than lavender town, but you may like it. Still I believe that this game deserves an 8.8/10 for me and for you. I may be a bit bias since it was a Yu-Gi-Oh game. Thanks for reading this.


 

The music isn't that bad, but I can agree that it isn't very good. The only good theme is the boss battle theme, like when you battle Zane in story mode.
The 2.5d approach to the actual duels was something that I have to give major props to them for adding, I agree that it was a really nice touch.
The exam system is also really good, as it spices things up with its damn-near-impossible questions and challenge duel at the end. Right, I'm supposed to ritual summon 5 times to pass the test while Joan of Arc is on the field, like that's going to happen. It really puts you in your place and contributes to the difficulty.
The difficulty I kind of have a problem with.  Every single one of your opponents, even the god awful ones in the series, all have ridiculous strategies, mirror force, mirror force, and mirror force. Why does Syrus have mirror force, come on. I always get Zera the Mant out and whoops, it's mirror force. The game literally is always two steps ahead of you, which gets tedious after a while.
Overall, your review is pretty spot-on. Good job.

This review is overall kind of bad. An example would be your spacing;
Introduction!
Yu-Gi-Oh! GX is has many great characteristics about it. Whether it was game play, story, or graphics. I will separately discuss the categories down below. The game begins as you being the new kid in Slifer Red dorm. In this dorm there are some really bad players and then around every month it should commonly appear, an exam is given to test your abilities. There are parts of the test, but I won't say anything except that it is a questionnaire, situation, and a practical exam. If you can get over a certain score, and you may be able to get a better dorm, like Obelisk Blue or Ra Yellow. Being in a different dorm is different because you will be able to battle new players and probably better ones.
Graphics 9/10
Now the graphics are astonishingly good! The characters appear like how they look in the anime. The cards' design look exactly the same. The cards are identical to the ones in the show and real life. It has a considerable amount of detail to the cards. The cut scenes are superb for a GBA game.

Also, why did you have Introduction! at the very start? And why the exclamation? To your credit, your capitalization is fine, but your punctuation needs work. Despite all that, this is overall just another lazy half-assed video game review on Vizzed.com.