The game changed quite a bit after my initial review. It become a resource management tower defense game. It has much more features to it now, and the very limited space for constructions is gone since now you can merge buildings of the same level and type, without losing anything and getting back space to use.

Later on you can even expand the grid more, but be aware that theres some bugs with the 2 bottom lines depending where you place a turrent it will disappear forever.

Overall the game got much better than it was before, therefore changing my negative review, still a very simple game, but now it feels like a proper game.