User blog comment:Mobo85/New Online Game Opens Portals of Fun for Phineas and Ferb (and You)/@comment-1463891-20100331213322

@Kittyfire: You need to press a switch to disable the wall before you use the launchpad.

@Anon: You do get to see Phineas and Doof in 3D on Ferb and Perry's final levels respectively.