I like how your game teaches how to play the game with simple levels and works on that concept later in the game.
It was definitely engaging play, even though it lacked depth.
The idea is pretty cool and it fits the theme really well.
Even though the graphics are simple, they do convey the necessary information of the game.
However, the game does need more polishing mainly in the UI and pace of the game.
If it was a Ludum Dare game:
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Innovation – 4/5
Fun – 3/5
Theme – 5/5
Graphics – 3/5
Audio – 3/5
Humor -2/5
Mood – 3/5
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Overall – 3/5 (Upper 3, if there was this option)