I'm looking for some help to put together a list of DS games that extend the gameplay onto both screens. Another way to explain this is that both screens act as a single vertical orientation monitor. Most games obviously use both DS screens, but not together as one. I'm looking for games that do this throughout a good majority of the gameplay, not ones that have mini games or parts where it is seldom used. I'm disappointed that this technique was underused and not taken advantage of. It would have worked really well for shmups.
I got some of the games from this thread: http://www.gamefaqs.com/boards/925329-/61648842
Example:
Truly vertical
Arkanoid DS
Big Bang Mini
Bubble Bobble Revolution
Contra 4
Devilish
Dragon Quest IV
Dragon Quest V
Dragon Quest VI
Dragon Quest IX
Game & Watch Collection (arguable)
Game & Watch Collection 2 (arguable)
Guilty Gear Dust Strikers
Little Red Riding Hood's Zombie BBQ
Lunar Dragon Song
Mario & Luigi: Bowser's Inside Story
Mario & Luigi: Partners in Time
Mario vs. Donkey Kong: Mini-Land Mayhem!
Metroid Prime Pinball
Mr. Driller: Drill Spirits
Pac-Pix
Peggle DS
Sonic Rush
Sonic Rush Adventure
Space Invaders Extreme
Space Invaders Extreme 2
Space Invaders Revolution
A Topsy Turvy Life: The Turvys Strike Back
Windy X Winham
Yoshi's Island DS
Yoshi Touch & Go
Not truly vertical (screens are not continuous/contiguous)
Chronos Twins
Infinite Space
Monster Tale
Pac Pix
Viewtiful Joe: Double Trouble
The World Ends With You