This game has a lot of potential! Can't wait for the next version! Some thoughts: I think adding a reward for completing the level quickly or without having to restart would be cool (in-game perk). I also think there could be some story beyond completing all the levels. This could be told through a) exposition/scenes in between levels or b) by making the world feel more complete by telling some kind of story more indirectly (ie., things in the background etc). Also, I am not sure I beat the 6th level as intended so I attached the screenshot here of my solution. 