I think adobe made this clip using after effects .
If you look to it deeply you will notice that non of the cards or the objects has an extrude . and i think building the castle and the bridge and all the objects can be done in after effects but the confusing thing is the animation of the cards to build these objects .
I don’t think there is a 3D application was used to this. I belief that adobe is using the maximum of the integration between its CS3 and to challenge and tease us .
I hope someone of the genius guys of after effects can comment a post to benefit his experience.
thanks a lot
Gvision