Evolution wars have begun in iO games unblocked servers based in US. Play Evowars.io unblocked as a cruel challenge to survive! Set your nickname and select the default avatar for the beginning. By gaining XP and collecting points on battle ground, you aim to fill the sword with blood downside of screen. When it gets full, you increase one level. Each level will help you to unlock a new evolution which brings you a better weapon with a stronger avatar. 23 evolutions are available to be unlocked by the player, you.