while on story mode or playing pause the game and you should see secrets in almost the bottom of the screen
They are actually cheats, so trying searching cheats for The Incredibles ROTU
animal style fries-fries with melted cheese and chopped onionsdouble meat-a double double without cheesefries well done-extra crispy friesgrilled cheese-grilled cheese sandwich with tomato, lettuce,...
I believe it's the icon with the question marks ??? like that :) Hope I helped!
it's not on dvd because ''Incredibles: Rise of the Underminer'' is just a pc game, not a movie. They didn't make a second movie of the incredibles....