I've been playing Kingdom Hearts since the series debuted in 2002. For me, reaching this point in the series feels like a chapter of my childhood coming to a close. I felt so excited and nostalgic as I started this up and got to work.
At first, I was blown away. There are a lot of things that KH3 does right. The graphics are the best they've ever been. Not only are they detailed and beautiful, but they are actually stylized to each world. No more of Sora looking like a Saturday morning cartoon while hanging out in the Pirates of the Caribbean world!
The combat almost overwhelms you with the amount of techniques at your disposal--attacks and magic, sure, but also Focus attacks, Link summons, Attraction commands, and Form changes. If you're a veteran, you'll pick it up easily enough. I found it worth it too, because all the options keep the combat fresh, exciting, and flowing. I never got a tired of a fight in this game.
The story is... Well, it doesn't make any sense. I've just accepted that at this point. However, this game is better than others. Being the conclusion to a saga, you're not thrown many new developments. You start the game with the mission to prepare for the final battle. You end the game by going to the final battle. Simple enough!
What did disappoint me was the thought that this game could do a lot more. To wait 13 years for a game and then beat it in 30 hours of game play is a big let down. The worlds in this game have expansive maps, but there are only about 10 of them. There are countless Disney movies to draw on for inspiration, some of which exist in the game but we never actually see (like Sword in the Stone, for example). What gives?
For that matter, even some of the worlds that are in this game only exist in cut scenes, or else to host just one battle. Expanding them into bigger worlds could have done a lot to fill out the game. Radiant Garden (and its Final Fantasy characters!), The Dark World, the Land of Departure... These would have been exciting arenas of exploration, but we barely see them.
At short times in the game, you get play as other characters. It made me wish we could have switched between them the whole time. Instead of watching Riku explore the Dark World in cut scenes, why not let me play as Riku and explore it myself? More game play time and more worlds in one easy solution!
With that off my chest, I definitely still really enjoyed the game. It felt like coming home to return to these characters and their silly dialogue. I got a little misty-eyed more than once. Add in the graphics and the combat, and you have a really fun time ahead of you. If you have already played the rest of the series (or enough of it to get the gist), do yourself a favor and experience this one too.