Tickets have gone on sale for a Euro Lottery, offering jackpots that could reach more than £50m.
From Saturday National Lottery enthusiasts have another outlet
The game is described by Camelot as its "most ambitious since the launch of the National Lottery" 10 years ago.
Tickets cost £1.50 in the UK and offer a greater range of prizes than existing National Lottery games.
The new game, called EuroMillions, is being run in conjunction with lottery operators in France and Spain. More countries could join next year.
The draw will take place every Friday evening, starting on 13 February.
It will be shown on Sky Television - the first time a National Lottery draw has been transmitted by a commercial broadcaster rather than the BBC.
The starting jackpot is estimated at £10m.
Camelot says the average is likely to be around £14m, though rollovers mean it could grow to £50m or more.
Sales of lottery tickets have stabilised after several years of decline and Camelot hopes EuroMillions will help sales.
A spokeswoman said: "There will be an effect on the other games - but we believe EuroMillions will produce a large number of additional sales and therefore additional money for good causes."
But she added it was too early to predict sales figures as about 70% of tickets are sold on the day of the draw.