Wild scenes have unfolded across pubs in Australia, as thousands itch for a chance to play two-up - the only day when it is legal to play in the entire country.

Huge lines of eager Australians were spotted across the streets of Sydney on Saturday afternoon as punters try their hand at two-up - a traditional game reserved specifically for Anzac Day.

Two-up is a traditional gambling game that is strictly illegal across the country with the exception of Anzac Day.

However, these rules vary depending on the state you live in.

In NSW, participants are only allowed to play two-up on Anzac Day, Victory in the Pacific Day on August 15, and Remembrance Day on November 11 after midday.

Revellers were seen in droves at The Clovelly Hotel, Vic on the Park and the Harbord Hotel in Sydney on Saturday.

The queues wrapped around streets as hundreds of eager Sydneysiders waited their turn to play the game.

Dressed in t-shirts and shorts, the keen punters packed the pubs as they watched others try their hand at the traditional game, once loved by Anzacs during the First World War.

Some dressed in costumes as they stood in the ring and held the wooden bat, better known as a “kip”.

Onlookers placed money on the ground, ready for the next spinner to take a chance at the game.

Blue skies blanketed the cities as hundreds rocked up to the Harbord Hotel, ready compete in the coin tossing game.

Social media posts revealed the wild scenes on Saturday afternoon, with hundreds of attendees soaking up the sun and good vibes.

“Come in, spinner!” the ringkeeper yelled as revellers held pints of beer and cheered as particpants threw the coins into the air.