Just brilliant throughout - each level had such a well realised atmosphere and feel, with some wonderful ambient sounds and great use of colour and simple geometric shapes which somehow made the six faces of each die feel like an entire world to explore. Particular highlights for me were Forest., which felt warm and welcoming and was just a pleasure to navigate, and Circuit., which with the flickering cube felt very creepy and dangerous.
I'm terrible at visualising things in 3d so can't even begin to imagine how you'd do the level design for this, especially since it's so good! Levels were all completely unique feeling, with a clear focus on a particular mechanic or quirk of the concept (Freefall. stood out for this!).
Absolutely loved this from start to finish :)