tug boat addition is a game in which you can move the tugboat by clicking the answer that is appropriate below the equation. The tugs which your boats gets is increased depending on the way you answer the questions faster, the boat which moves first over the buoy is the winner. in this game 8 players can play at a time. the contents of the game is the facts of addition to 12. the candidate should be fluent in subtraction and addition up to the level 10.