Thanks a lot for linking to all these interesting interviews. The "Game Reactor" interview was especially interesting because there was unseen game footage (for me atleast).

If you don't mind. I tried to translate the german interview. I used the webpage as a source, because it has the same content as the video plus a bit more.

Translation:

People play games since 10 or 15 years and say: "Hey, I have an interesting story" and then just make a game out of it. Exactly this way Owlboy was created. 10 years in the past it would have been much more difficult to develop such a professional game just with a handful of people. Owlboy mixes old fashioned 2D worlds with a lots of new ideas. The hero is the owl Otus, who fights around flying islands to rescue his home. The interesting part: Otus is unable to speak, therefore he communicates with positive or negative gestures. However, Creatures which Otus meets to create alliances, can speak. So you have to answer the question of another character with the appropriate gesture: friendly, smiling or disagreeing. Modern games normally pushes 3D. But the Owlboy makers have the opinion that the old fashioned 2D concept can still be pushed further.

The gamemakes comes from all over the world. Blake Edwards ("Owlboy", D-Pad Studio): "Adrian is from Canada, Simon is from Norway like Jo and I'm from the US. We begun making games when we were younger. Someday we have experimented with various things and Simon has come to me with an interesting idea. I've already had a game engine, so we mixed everything and this greate game came out of it."

Wow, thanks for the translation, this is great:-D