Club cricket, by far and away the widest form of cricket played worldwide, is largely amateur, but still formal, cricket, with the teams organised into leagues. The games are sometimes limited-overs, with each innings usually lasting between twenty and fifty overs. Other matches are played to time restrictions. Restrictions in overs or time may be placed on each side individually, or they may stipulate the total length of the match. The latter more traditional case is often known as "declaration" cricket.