Titans play diffrently then normal risk. Read the rules carefully, Rules are on the game board: http://www.wargear.net/boards/view/1002/Board
Things to take note of:
-Continent bonus is worth half the number of Towns in that continent. You must Control EVERYTHING to get the bonus. (all towns, ships and titan)
-Titans and Ships are worth +1 each
-Controlling all towns in a continent +1
-Ships can only attack other ships and Titans (Ships can not attack Towns)