Always fun playing your puzzle games in these jams! I loved the look of this one.. the assets for the bubble and rock are awesome and go really well with the background. The color scheme is also very pleasing to look at and apt for a puzzle game where you might have to stare at something for a long time before something clicks!
Im not great at solving such puzzles, so really couldnt solve more than 3 or 4 puzzles, but pretty satisfying feeling after you solve one. I could figure out a broad strategy to solve and felt good after that haha. I like that you have a practice mode for a more relaxed challenge where you can take your time and figure out strategies and then try out the challenges. I came to know that there was a hints mode after playing for a couple of times (maybe can be made clearer by just writing text instead of an icon? not a big deal, but just more clear)
The theme was pretty well integrated with the flip mechanic although i felt after watching a few solutions - can all puzzles be solved without using the flip mechanic? Or it is more of a time saver mechanic where you can solve it in lesser moves?
The audio loop felt a bit repetitive after a while so in case you want to work further on this, maybe a longer one would be better suited.
Overall a solid entry and a great puzzle game, definitely something you can make into a larger game :)