Braains.io free online is a Multiplayer zombie game using iO extension. You will have a chance to team up with many players in order to battle against the zombie team. At the very beginning of the game, there is one person who got infected and changed into the zombie. Now, you must try your best to run away from the zombie outburst for your survival. Work together with other friends, utilize make items around you so that you can build up your own defense before the zombies approach. Don’t forget to utilize Braains.io mods for further helpful features! Have fun!