Heres a list of 20 games for the DS, you should pick which 5 games will be the most valuable and why. I only picked DS because it is a modern system, and I know 20 games for it.
Bookworm Adventures
GTA Chinatown Wars
Tetris DS
New Super Mario Bros.
Little Red Riding Hood's Zombie BBQ
Trauma Center: Under the knife 2
Final Fantasy 4
Metroid Prime: Hunters
Guitar Hero on tour
Geometry Wars
Tony Hawk Motion
Super Mario RPG 3: Bowser's Inside story
Mario Kart
Zelda: Spirit Tracks
Metal Slug 7
Space Invaders Extreme
Drawn to Life
Resident Evil: deadly silence
Touch the Dead
Moon