Not true. The codes are there you just have to search for them. They are not with the cards and directions. They are not with the mega poster. And it is MEGA! It is bigger than 3 of our 4 children. It's double sided and has the Dark Edition characters on one side and all three posters on the other.
But the codes... Oh yeah they are taped on the inside of the box on a tab by the characters. Depending on which side you open the box you may or may not see them.