What is this 3D perspective called and how do you achieve it?

Hello!

I’m very curious about what the official term is for the “rolling” 3D perspective that is used in games like Deathspank and Animal Crossing DS, and would also like some insight in how it is made. Here are some examples:

Animal Crossing DS: http://www.youtube.com/watch?v=UcxPj42Jo1w#t=0m18s
Deathspank: http://www.youtube.com/watch?v=aiSourHrvF4#t=0m42s
Fishermans-day Demo: http://www.dangerous-rabbits.com/independant-projects/fishermans-day/demo/

The last one is made with Away3D in Flash, so I know it’s possible to do it, but how?

Any ideas or tips would be very appreciated!

/ Frank