Survivor.io is an action-packed tower defense game that pits you against a horde of monsters, zombies and other threats as you battle for control of the city. Create your own pro squads from a selection of heroes and villains, then use their unique abilities to take down waves of enemies in real-time combat. Strategize to survive challenging boss fights and unlock powerful rewards while defending the city from total destruction! With intense PvP battles, co-op missions and daily challenges, Survivor.io has something for everyone!