My favourite one is the Spindles' one :)
It sucks that he doesn't post his art to the public anymore :(
This is the allegorical game. The shadow family represents the civilians immigrating to a new country for a happier life, while the Shadowcatcher represents the dark side of border control and xenophobic authorities that doesn't let people from their different land go, discriminating them.
So, the Shadowcatcher is discriminating the family of shadow immigrants.