You start a game with the “Start game” menu item. During a game you can pause or stop by typing the keyboard equivalent of a menu command (e.g. command-Q to quit), or by pressing the mouse button. If you pause for more than a minute, the title screen is displayed, but the game is not over. You can still resume the game from the control menu.
Whenever a game ends, statistics are shown. Unless the game is aborted or quit, level scores at the end will force a tie-breaking round.
You can change each player's keys, the length of a game, the sound volume, and whether the maze has loops, with the Preferences menu item.