It's 4am in Australia but the scenes are crazy as they book spot in World Cup last 16

Australia have booked their spot in the next round of the World Cup after stunning Denmark 1-0 on Wednesday and the scenes down under look WILD.

The 31-year-old forward produced a moment of magic on the hour mark as he slotted home with a brilliant left-footed finish.

They kept their qualification hopes alive after beating Tunisia 1-0, with the Aussies eliminating Denmark from the World Cup following their 1-0 victory at the Al Janoub Stadium.

There were pure limbs on the touchline, led by national team boss Graham Arnold, but it's nothing compared to the scenes back in Australia.

A video shows fans in a state of euphoria, lighting flares as they celebrate the enormous victory.

Thousands of supporters are gathered in a fan park, watching the action unfold on a big screen.

It's just the second time the Socceroos are through to the World Cup last 16, having secured a spot at the same stage in 2006.

Speaking after his side's win, Arnold said: "I'm so proud of the effort by the boys. There was a short turnaround but their effort was incredible.

"A lot of belief and hard work. These boys come in with a great mindset. We've been working on this for the last four/four and a half years about the belief, the energy and the focus. I could see in their eyes, they were ready tonight."

He added: "No celebrations! That's why we won after a great win against Tunisia, no celebrations, no emotion, sleep and no social media."

France top Group D despite losing 1-0 to Tunisia while Australia finish runners-up.