The pools are typically cheap to enter, and may encourage gamblers to enter several bets.
The traditional and most popular game was the Treble Chance, now branded the Classic Pools game.
Players pick 10, 11 or 12 football games from the offered fixtures to finish as a draw, in which each team scores at least one goal.
The player with the most accurate predictions wins the top prize, or a share of it if more than one player has these predictions.
In addition, there is a special £3,000,000 prize or share of it for correctly predicting the nine score draws when these are the only score draws on the coupon.
Players can win large cash prizes in a variety of other ways, under a points-based scoring system.
Entries were traditionally submitted through the post or via agents, who collected entries throughout a specific area.
It is now possible to play online.
Littlewoods, Vernons and Zetters were the largest pools companies.
Littlewoods was the first company to provide pools, selling them outside Manchester United's Old Trafford ground in 1923.
In 1986, a syndicate of players became the first winners of a prize over £1 million.
The football pools companies have traditionally been charitable, donating over £1.1 billion to sports-related causes.
The pools business declined after the introduction of the National Lottery in 1994.
Littlewoods, Vernons and Zetters were brought together in 2007 by Sportech under the brand 'The New Football Pools', now known as 'The Football Pools'.
They offer other small stake, high prize games such as Premier 10 and Jackpot 12.
In 2017 The Football Pools was sold to OpCapita, a private equity company, for £83 million.Read more