Is Phineas and Ferb across the second dimension Multiplayer?

Phineas and Ferb Across the Second Dimension is not a multiplayer game. It's a single-player adventure game released for various platforms like the Nintendo DS, Wii, PlayStation 3, and Xbox 360.

While it has elements of cooperative gameplay in certain sections, like driving a car with a friend, the core game experience is designed for one player at a time.