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Episode 17: Pico-8 Games
Woah awesome, thank you so much for doing this! (Also wild that FEZ/FUZ wound up taking almost 40% the episode!)
Regarding your points:
If you'd be interested in seeing a (spoiler-y) deep dive into the development and puzzles of FUZ I did do a whole lengthy write-up about it: http://www.jusiv.me/blog/fuz-reflections/. It will spoil puzzle aspects of both FUZ and FEZ though, so proceed with caution!