Everybody must know this game. It's for me the best on Nintendo DS. On this thread talk about all things relating to this game as your current level (I finished the game and I have mario and luigi lv.47 - Bowser lv.46), advices, tricks...
I finished it 3 times. It was hard because the last boss (the 3 last bosses!) is hard to beat. I used an items which allowed Bowser to make 2 actions in 1 turn. It was easier with that.