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Dragon Quest 9 is easily the best of the bunch. If you think Dragon Quest 9 is boring because it has a weak story, then you probably don't want a Pokemon game; they all have very weak stories.
The DQ9 story follows the formula of establishing the main character, then going through sub-plot lines for the first half of the game, then the main plot line for the second half of the game. Once the main story is complete, there are lots and lots of other things to do, and this includes revisiting old villains and characters from past games. The game is largely focussed on building up your character. While the game doesn't have a strong plot like DQ5 does, the game does offer much more in all other areas. I have packed in 82 hours total, including 51 hours multiplayer (although it doesn't feel like I have played that much). I consider it to be hands-down the best original game available on DS.
Kingdom Hearts 2 - I played a little, but it has been sitting in my collection for like 5 years or something. I do mean to get to it eventually.
Devil Survivor - The game starts out very fun and interesting, but eventually the game gets ridiculously frustrating due to poor design and balancing; monsters get too powerful to kill fast enough (there's a lot of protect quests and such). It will be even worse for those who do not abuse the monster-merging system to the max.
I describe myself as a little dose of toxic masculinity.
