This mod introduces a classic piece of weaponry, cannons. The cannons can be fired manually with a torch and cannonballs or fired via redstone allowing you to create large volleys of destruction. The cannons and cannonballs are fairly inexpensive so it won't drain your resources too much. The cannons do not affect any other aspects of gameplay other than being what is essentially a portable TNT cannon.
The Pirate Cannons! Team
