Quick Answer: Twenty20 is a shortened format of cricket. At the professional level, it was introduced by the England and Wales Cricket Board in 2003 for the inter-county competition. In a Twenty20 game, the two teams have a single innings each, which is restricted to a maximum of twenty overs. Together with first-class and List A cricket, Twenty20 is one of the three forms of cricket recognised by the International Cricket Council as being played at the highest level, both internationally and domestically. A typical Twenty20 match lasts just over 3 hours, with each innings lasting around 90 minutes and an official 10-minute break between the innings. This is much shorter than previous forms of the game, and is closer to the timespan of other popular team sports. It was introduced to create a fast-paced game that would be attractive to spectators at the ground and viewers on television. The game has succeeded in spreading around the cricket world.