Wow professor Layton was a cool game, get it!
And now some platformers:
Kirby Canvas Curse (my absolute favorite DS game) good music, cute graphics, cool sounds, and LOADS of stuff to unlock.
Super Princess Peach, not bad really, kinda repetitive though.
Yoshi's Island 2 DS - great game!! I was HUGE fan of the Super Nintendo game, this is a very faithful sequel-port.
New Super Mario Bros - what can I say? it rocked with loads of cool unlockable shit.
Kirby Squeak Squad - awesome to be kirby with legs again!
Drawn to life - quite artistic, I made my main character look like Jason Voorhees.
Rocket Slime Dragon Quest - The tank battles are what make the game.. the sounds/music/etc are great
lego star wars complete series - fun and well.. gimecky fun.
TMNT - good graphics for a DS platformer!
castlevania - Dawn of sorrow - got old fast.
castlevania - Portrait of ruin - had cool new aspects but got old fast. BOTH are worth playing though the first time through its great
but no good replay value.
Pac n' roll - quite a cool concept, grabbing and rolling the lil guy, almost similar to the beautiful Canvas Curse. (but not a s beautiful)
Franklins Great Adventure - turtles are nasty animals that smell funky in half water filled fish tanks in metallica fan's bedrooms, or running around the rotting sewers looking for pizza, Franklin makes that all better by being so cute and happy
Scurge Hive - Neat concept (very Sega(y))
Tak - have it on my DS but havent played it yet!
Hey thats a cool idea list all the games on your DS right now!! x)