Hello Phineas and Ferb fans, what if there's a LEGO Phineas and Ferb video game?
Well, if there's one, you could play as all of the cast of the show as LEGO Minifigures plus it could have a GTA style open world.
In fact, gameplay elements from The LEGO Movie Videogame (ex. Master Build) will be implemented.
I'll update this when you commented below.