defly.io is a cool MMO power-up Io game which is based on several popular styles such as Agar, Diep or Splix.io. Control a helicopter and play with multiple enemies. Defeat as many rivals as possible and do not forget to occupy the largest airspace so as to become the top player. Aside from shooting at the target, you are also able to build walls. They are useful items that will defend yourself and your territory from attacks of the foe. You should connect them together by passing through. When you fill areas, you will gather more points, gain experience and level up. If you advance like that, you can improve your aircraft and structures. Not only that, many superpowers will be active when you progress. They are really effective to remove the prey in an instant. Try to survive and extend your kingdom! Are you willing to join the combat and finish every quest? Good luck!