This is my all time favorite ds game.
You get to explore several different planets, your friends all have different abilities and magic which help you in each planet. The battle system is turn based and is quite simple. One thing that i really liked about this game is the characters, all of them are interesting and unique and at times made me laugh.
I was not a fan of turn based rpg's until i played this game, now im addicted which is good because there are so many on the ds. The graphics are really good and it has beautiful bright colours, the cut scenes are the best iv seen on any ds game. This game is also pretty long, it seemed to take forever to complete it so you definetely get your moneys worth(not that this game is expensive).
The boss battles can be pretty tough so don't buy this game if your not a fan of leveling up your character. Overall i think this game is a gem and is very underrated, i was very suprised at how much fun i had so if you see it, buy it!