The ambiance is spot on, the game is very beautiful! Fun and unique idea and you executed it well. Since you have really nice looking particle effects already, it would be nice if the player sprite emitted some extra shimmering when they pass through a transparent block so you really feel like you're impacting the world. This is nothing that impedes on the gameplay and the color change on the sprite is enough to get the point across, just an idea! Super well done and great usage of the theme, thanks a ton for sharing :)