Cannoneer is a fun game of physics. Use the cannon to shoot by pressing the mouse button. The longer you press the mouse button the farther your cannon will go. There is no power meter however so you'll have to get a good feel for how long you need to hold the button down. You can also move your ship with the A and D buttons. You're trying to shoot the cannon to knock the structures down in order to get to the Pirate Princess. Some levels will take a lot of finesse to get the right shot. Others will seem easy but you might end up blocking your path to the princess without some second thought. You'll have lots of fun with Cannoneer!