Playing a game in order to win money or anything else of value, when winning depends on luck. There are various restrictions upon gaming, depending on whether it takes place in controlled (i.e. licensed or registered) or uncontrolled premises. If the premises are uncontrolled, it is illegal to play a game that involves playing against a bank or a game in which each player does not have an equal chance or the chance of winning is weighted in favour of someone other than the players (e.g. a promoter or organizer), unless the game takes place in a private house in the course of ordinary family life. Thus one cannot play roulette with a zero in uncontrolled premises, but one may play such games as bridge, whist, poker, or cribbage. It is also illegal (subject to one or two exceptions) to game when a charge is made for the gaming or a levy is charged on the winnings. Gaming in any street or any place to which the public has access is illegal, except for dominoes, cribbage, or any game specially authorized in a pub (provided the participants are over 18). If the premises are controlled (either by the grant of a licence or by registration as a gaming club), the restrictions applying to uncontrolled premises apply unless they have been permitted by regulation. Thus casino-type games may be played on controlled premises for commercial profit if permission has been obtained, but only by members of licensed or registered clubs and their guests. There are also restrictions relating to playing on Sundays, and no one under 18 may be present when gaming takes place. It is illegal to use, sell, or maintain gaming machines without a certificate or licence.