defly.io is a 2d shooting coolmath game hiding lots of upgrades for buildings and airplanes. Play against multiple online enemies on the same battlefield unblocked and destroy as many as possible! It will increase the chance to survive and win the top spot of defly.io hacked free. Not only that, you are recommended to build walls and expand your territory in a short time. When you stay alive and level up, you will gain exciting stuff and superpowers.