DS game recommendations

If you're into rhythm games, Rhythm Heaven and Elite Beat Agents are easy recommendations for me. 

However, I hear that Rhythm Heaven is hard to get your hands on at a good price, but if you can find a copy at a reasonable price, buy it. 

Give one of the pokemon games a shot if you haven't, all the ones on the ds are great, you can't really go wrong.

2 of my favs from the system are
the world ends with you (rpg)
and
9 person 9 hours 9 doors ( escape rooms type stuff)

neo the world ends with you is a fave , along with devil survivor 2!

I'd highly recommend Fossil Fighters and Fossil Fighters Champions. They're pretty goofy but very fun.

If you like strategy, try Advance Wars Duel Strike and Days of Ruin.

If you like Pokemon, the mystery dungeon games are great, definently try Explorers of Sky. Conquest is rad too.

Madden NFL 08.