Yorg.io 3 is a free-to-play, online, HTML5 game in which players must build a base and manage its resources in order to survive against waves of zombies. The game is played in a top-down perspective, and players can control their base by clicking and dragging on the screen. Players can build a variety of structures, including walls, turrets, and mines, to defend their base. They must also collect resources, such as crystals and wood, to power their structures and build new ones. The player who survives the longest wins the game.