Worried parents are searching for answers as the world begins to catch up to the issues surrounding gaming addiction.

The latest gaming craze, Fortnite, boasts 46 million players worldwide - many of them far younger than the recommended age limit of 15.

The game pits players against each other in an effort to be the "last one standing" in a running island battle.

Mum Jacquiline's sons Ryan, 11, and Dylan, 9, are fans of the game.

She allows them to play only on the condition that their homework comes first.

"I gave into the peer pressure because if they don't play, then the kids at school look at them as though, oh, you're not cool, that type of thing," she told A Current Affair .

Fortnite has become the world's latest gaming craze, boasting 46 million players worldwide. (9news)

Michael, another 11-year-old, said he felt he was "addicted".

His mother Nikki said she was concerned about the impact it might have on him.

"He does become ... not so much angry, he's just frustrated," she said.

The game is recommended for ages 15 and over but is played by a lot of younger gamers. (9news)

"It's almost like he needed a fix and that worries me a lot. I don't like that."

Gaming expert Seamus Byrne said parents should pay attention to the ratings.

He said Fortnite at least lets parents rest easy in terms of online stranger danger, as it doesn't have a chat tool.

Experts have warned of the negative effects games like Fortnite can have on young players. (9news)

Psychiatrist Dr Philip Tam said adolescents with conditions including ADHD, anxiety and depression were most at risk of negative impacts from video games.

"Another big problem is playing to excess of their real world activities, so there's a detriment in their schooling (or) in their healthy sleeping patten," he said.

The World Health Organisation will add "gaming disorder" to its classification of diseases later this year.

Ryan and Dylan play Fortnite under the watchful eye of their mum Jacquiline. (9news)

However, Dr Tam advised parents against taking an extreme line.

"I do advocate a sensible, calm, collaborative approach so: give them them a warning, maybe 'you've got half an hour left' or 'you've got five minutes left'," he said.