I like the artsyle and sfx! It's a cool concept and the "flow" stuff just makes it better. Although maybe the rocks should update everytime you move instead of moving automatically down the streams.
The difficulty spike after level 2 I found is very real lol. I just couldn't find a way to move the rock in the final level - it'll keep getting stuck on corners. I'm probably missing something. I couldn't really do the 4th level either. I always got so close too!
Really cool concept and charming art style but I felt it was a tad bit difficult lol
Good luck with da jam!