While I had been reading the theories at another website and the protagonist is actually evil or the main character is actually going through boy to adulthood. Here's my theory: a boy died and is going through two afterlife possibilities.

I think I like Boy and his Blob more than Limbo. 
 
Who's with me?

Or its just some pretentious indie game with no hidden meaning.

Dedicated hug button conquers all.

A Boy and his Blob is nothing like Limbo after the first level