Play Fortz unblocked: Battle with a friend using cannons, machine guns, air-strikes and more! How to Play: Blast away the walls of your opponents fort while trying not to get blasted yourself. Collect ammo and power-ups but watch out for the killer robotic dogs. The Level editor mode lets you and your friend build your forts first before going head to head in battle. Fortz unblocked is rated E for Everyone.