Job well done. It went on discount, I noticed it has a demo! Tried it, was very pleased with a proper assortment of settings in the options menu, and navigation is smart, fluid and everything looks well-polished. Noticed the somewhat chiptuney music and was immediately captivated by the simple-yet-beautiful assembler-demo-like visuals. I think I only played half of the demo content before my decision to buy.
The game is centered around sunflowers! What more could you ask for?!
You can take your time, and once you have figured a puzzle out, you can try doing it in record time, getting extra score with multipliers and such. It's implemented in the normal game mode. Elegantly done.
The game concept reminds me a bit of The Bridge (which came later, so it might have been inspired by this, who knows?).
The only thing that bothers me a little is the artificial difficulty-raising because of the camera. Apparently getting the optimum view in any moment is intended to be part of the challenge.