Really cool concept, and the block placement system is great too! But I felt that the game is easy in the first 5 minutes, maybe the enemies will spawn faster, or can increase the cost of the block.
Thank you for your feedback ! I couldn't find a good difficulty curve that makes the game challenging enough in the beginning without making it too hard at the end ! I think that adding a scaling difficulty level may help, but yes maybe changing the cost of the block for the early is the play :)
