Viking Lotto (known in Denmark as Onsdags Lotto, "Wednesday Lotto", Víkingalottó in Iceland) is a cooperation between the national lotteries in Norway, Sweden, Denmark, Iceland, Finland, Latvia, Lithuania and Estonia. Viking Lotto started in 1993 and was the first of its kind in Europe.
Draws are held every Wednesday evening and they take place at Norsk Tipping in Hamar. The first prize is common and is financed by a certain Euro amount for each combination played. The lower prizes are national and locally decided. This arrangement is different from Euromillions where all prize categories are common.
The issue is to select six numbers which can be any integer from 1 to 48, called a combination. During the draw, six main and two additional numbers are drawn from the source of 48 numbers. The first prize is won with six correct numbers and the remaining prizes are decided depending on the number of correct combinations.