To be completely blunt I was ready to write this off after the first 20 seconds.
I'm really glad I didn't, this is actually incredible!
The first stage after a while especially felt like you nailed the theme and atmosphere. Seeing the screen get darker and greyed out, coupled with the rising water and genuinely eerie flower design was so awesome! I had to see the rest of the game at that point.
Great subversion of expectations.