Ok, based on the screenshots and the game's page I thought this will be just a barely functional game, but oh boy, how wrong was I?
I actually really enjoyed this game. The UI/UX is very straightforward, the Tutorial very polished and pleasing to actually go through and the gameplay is super easy.
It's not hard (very casual - which I personally like) and pretty cool. Nice! :)
- It reminds of plants vs zombies a bit.
Try to pimp up your game's page a little bit next time.