The goal of the game is to be the last emperor, i.e. to place a marble in the center spot of the board while your opponent(s) are unable to overthrow you.
Each turn, a player can move one of his marble to the next spot torwards the center of the board, or on both sides of its current spot. A marble can never be moved backward (i.e. towards the edge of the board). Marbles are eliminated the same way as in checkers, but can also be blocked (in "wells") ; the board is rotated under certain circumstances to modify the wells.