The secret to winning lottery jackpot rollover games is simple

There is one important part of playing the lottery to win that most people ignore. And that's the choice of games you select.

For most players, it's an easy selection. They want a giant jackpot and nothing less will do.

So they choose the Powerballs, Mega Millions, Lotto Max and EuroMillions.

Trouble is, the lottery organizations know the power of attraction to the large jackpots too. Because more money attracts more players.

So they make these games harder to win. And by making it harder to win each week, they are often extending the game until the prize is enormous.

And this draws in more and more players.

So that's why you see prizes rolling over week after week.

In February 2015, a US Powerball jackpot rolled over 20 times before there were winners for the $564.1 million prize. Powerball also rolled over for 3 months in 2017. This particular jackpot rolled over 19 times with no one winning it since early April.

The UK National Lottery calls their rollovers a rolldown.

A jackpot rolldown occurs in a draw in which the top prize must be won but nobody matches all six numbers. When that happens, the prize money is split between other winners.

To date, there have been 16 'Must Be Won' Lotto draws in the UK National Lottery where the advertised jackpot amount was guaranteed to be won on the night, either by players matching all six numbers or by the funds rolling down across other cash prize tiers.