I see, thanks :D This is certainly one of the most memorable games I've ever played, and I can't even put my finger on what exactly makes it so striking. The whole is way bigger that its parts. All of its aspects synergize down to the smallest detail, as if the whole was tangibly present in each part, and because of that, the gameplay, in-itself nothing revolutionary, ends up truly feeling like a window to another world, which fulfills the promise implicit in the very existence of video games. Whenever I stumble upon an "Are games art?" discussion, I think of this game, along with a few others such as "The Witness", because it really does "something" and makes me feel "something" that only a video game could.
BTW, I remember reading in an interview something along the lines that your favorite game among those you made was something for your sister's birthday (?), did that game ever get released beyond the private sphere?