DS:

All the 3 castlevania games on it (Dawn of Sorrow, Portrait of Ruin, Order of Ecclesia)
FFIII and IV
Chrono Trigger
Megaman Zx and Megaman ZX Advent
New super mario Bros
Mario and Luigi: partners in time
Tetris DS
kirby Canvas curse and Kirby superstar ultra
Mario Kart DS
Yoshi's island DS
Phantom Hourglass
Luminous Arc

PSP:

Final fantasy I and II
Star Ocean First Departure and then Star Ocean: Second Evolution
Final Fantasy Tactics
castlevania: Dracula X Chronicles