Oz Lotto has been a cornerstone of Australian culture since its debut in 1994. Originally launched as a 6/45 game, it was indistinguishable from the traditional Saturday Lotto. However, in 2005, the game underwent its first major transformation by adding a 7th number to the main draw.

The Emerald Evolution

The addition of the 7th number wasn't just for show—it drastically increased the odds of winning Division 1, which in turn allowed jackpots to roll over more frequently and reach higher totals. This change created the "Big Jackpot" identity that Oz Lotto is famous for today.