for this game first you will have to log in and you have to create a game and then begin the race. To give a boost to your otter swim to the answer that is correct. To have a control on your otter use the arrow keys which is present in the keyboard. The speed can be controlled by the right and left arrow keys. the number of players who can play at a time is 4. the contents of the game is algebriac expressions which are variable.