Nice submission! I loved the idea as it changes the tower defense into kind of a puzzle game.
Didn't manage to beat level 5 tho..
Negative feedback : since it's a windows game, it could use some kind of menu screen ; the left/right of the screen is cropped and the 'Fight' button can be clicked multiples times which leads to some unexpected results.
Positive feedback : I liked the idea and enjoyed thinking how to win. Nice work !