Slay.io unblocked game is about a savage battle between two teams. Choose the group that you love and fight for them. The mission is to destroy all of them to climb up to the top position in the leaderboard. while you are looking for the enemy to kill them, you should remember that the others also can do the same for you. Watch your back and every direction to avoid their attacks in time. Also, you need to collect items in your Io Games to improve skills. Are you ready for this survival combat? Have fun!