I liked realistic visuals, exquisite design, creating feeling of something cosmic. In the end, this is what Bitsy ultimately lacks. Can't say anything about the gameplay since it's unfinished.
Narrative part though is impressive: game about unfinishedness of a game speaks beautifully with well made design and description. In this case, the description of the game is a part of this art-installation and the 'about' of the game is not what's inside of it, but the reality of its developer's creative work, in which player is looking. The contrast between what was announced and what was done, I think, can be considered a technique.