The black market for adult video games will be threatened by new laws proposed for Queensland that would introduce R18+ classifications mirroring those in effect for films.

The amendments to the Classification of Computer Games and Images Act 1995 were introduced in Parliament last night by Attorney-General Jarrod Bleijie.

Mr Bleijie said the change would bring the state into line with the rest of Australia, and give parents greater control over the computer games available to their children.

Under the new laws, anyone buying R18+ products would have to present proof of age so retailers could ensure only those over the legal age can access the games.

Mr Bleijie said a similar system had worked with films for a long time.

“We have not had an R18+ rating for computer games previously and these amendments will mirror the current classification system for films,” he said.

“By introducing the rating and legalising the sale of these products, we can ensure material is not being sold illegally on the black market and there is a control mechanism in place.

“Some material in these games is certainly not appropriate for children, so this new structure will be a good guide for parents and retailers as to what is appropriate.”

Earlier this year, the Senate passed legislation to create an R18+ category for video games with bipartisan support, making Australia more consistent with international standards.

The move stood as the Commonwealth's part in a 2011 deal struck with states and territories to include the new rating in an overhaul of the games classification system.

Previously, ratings for video games only went as high as MA15+, meaning overseas adult-only games were usually banned or given a lower classification in Australia.

At the time, Home Affairs Minister Jason Clare said the new category would inform consumers, parents and retailers which games are not suitable for minors.

“These are important reforms over 10 years in the making," Mr Clare said in a statement.

"The reforms also mean that adults are able to choose what games they play within the bounds of the law."