Fortress is a fast action puzzle/strategy game in which players build castle-style structures and compete against each other in an all out war to destroy their opponents edifice! Each level takes place during a different period of time; from the stone age to medieval times and from the days of swashbuckling pirates to the last frontier of space. With a variety of characters to choose from that aid in repair as well as destroy opponents, the battle wages until your enemy is completely destroyed!