If your looking for class rpg-style game, with a difficulty that will challenge you, this is the game to get for the DS.
Pros: The good parts of this game is that it offers three different level to play on. (easy is for the weak, normal is challenging, and hard is frustratingly challenging). So whatever your taste, as challenges are concerned is, you'll find a difficulty that will suit you.
Cons: The bosses can be too smart at times and if you don't build up your magic power early in the game, you'll be doomed to a stomping over and over again.
Overall, Hoshigami: Ruing Blue Earth Remix is a great remake of the PSX version of the game and will keep you playing for hours on end.