If you like the first one you'll like this.
Mario & Luigi: Partners in Time for the DS is the sequal to the first game. the story is that Mario and Luigi must team up with they're babyselves to stop an alien invasion from the evil shroobs.
This game is also funny like the first one with classical Nintendo humor (like bonks on the head and abusing Luigi somehow poor Luigi...) Like in SuperStar Saga you use A for Mario and B for Luigi but with the babies you use Y for b. Luigi and X for b. Mario.
Instead of Bros. Moves you know get Bros. items. (yeah i know sounds retarted huh?) you can use a green shell or those fire flowers or... someother stuff.
The bosses are hard in this game, and can take forever to kill. and i mean like forever. but it's still a good game. the controls will take a while to get used to since not all DS games use the buttons. but onec you get it all down and everything the game will be good. though it all ready is.
i give Mario and Luigi:Partners in Time a 9.4 out of 10.