A rule variant common in bar pool versions of eight-ball , in which the 8 ball must be pocketed on a bank shot (or sometimes on either a bank shot proper or a kick shot ); shooting the 8 straight in is a loss of game . Players may agree before the game begins to invoke this rule, or one player may challenge another player (who might accept or refuse) to conclude the game in this manner after if is already under way . Playing bank-the-8 can be considered rude if many other players are waiting to use the table, since it often makes the game last considerably longer.