Excellent game. It was a little frustrating at first, since I personally struggle with the mouse-point-gunfire thing, but once I got some walls built I just had to stand in one spot and rapid fire in one direction.
I like the concept a lot, and the mechanics are great, especially for so few buildings/animals. It could definitely be expanded into a much larger game with different crops with different effects, more animals/buildings, and even more gnome types.
Music and sound effects were excellent. Very professional and fit the mood well.
And I absolutely love the style. The characters and buildings look great and are super cute.