I loved the simple puzzles in the beginning.
But although you added more elements to it slowly, like villagers and ice, the game did not get that much challenging in the further levels.
The game starts to lag as the level size gets larger.
You should have included an undo button, as it is a strategy game and it is common to make a mistake that you regret a few moves later.
The character animations and sounds were really nice, but most of all- I absolutely adored the pleasant music.
Overall, this makes for a happy and fun puzzle game.