Great work!
I liked:
- The puzzles. The game demanded I think logically, and it was satisfying to slowly uncover a picture and figure out its finer details.
- The presentation. The game is polished, with the simple but colorful graphics making it easy to see at a glance what's happening.
Could be better:
- It took a couple tries to figure out how to play. The instructions were helpful, but a tutorial level would have made things easier.
- I would rethink the comparison to Minesweeper. Yes, they're similar, but there are enough differences that I had to drop some of my initial assumptions before I really figured things out.
- The random variation in the tile you can place was frustrating. Since you can't lose until you choose to complete the puzzle, this mechanic just stretched things out rather than adding an interesting decision or risk.