Stack by stack is a casual tower defense game with a bright and cute style. Battle robots are attacking and trying to capture the central core! Interfere with the evil bots, and to do this, build automatic turrets and various mechanisms that will destroy intruders before they get to the center of the map. Build, repair and fight to protect the world from the threat. Collect metal parts from destroyed enemies and smelt them to get parts to upgrade. Print the missing elements on a 3D printer and mine the ore with a special drill so that you always have a supply of materials.