I currently have(1gb):
Animal crossing
Brain Age 2
Donkey Kong Jungle climber
Electroplankton
FIFA 08
Harvest Moon
Jump Ultimate stars
Metroid Prime Hunters
My Sims
Namco Museum
Pokemon Diamond
Pro Evolution soccer 6
Super Princess Peach
Tetris DS
Theme Park DS
Tony Hawk's American Sk8land
WarioWAre Touched
Worms Open Warfare 2
Zelda Phantom Hourglass
Homebrew:
LemmingsDS
SNEmulDS
Animal crossing
Brain Age 2
Donkey Kong Jungle climber
Electroplankton
FIFA 08
Harvest Moon
Jump Ultimate stars
Metroid Prime Hunters
My Sims
Namco Museum
Pokemon Diamond
Pro Evolution soccer 6
Super Princess Peach
Tetris DS
Theme Park DS
Tony Hawk's American Sk8land
WarioWAre Touched
Worms Open Warfare 2
Zelda Phantom Hourglass
Homebrew:
LemmingsDS
SNEmulDS