Spain's government will within days present a draft bill to regulate video game "loot boxes" for which users must pay, a minister said Friday, warning of the addiction risks for youngsters.

An increasingly common feature in many video games, "loot boxes" are caches of virtual weapons and equipment which a player can buy to increase their prowess or status within the game.

But not all boxes contain useful tools and gamers can only see what's inside after paying, prompting widespread criticism for encouraging behaviour similar to that associated with gambling.

"We have drawn up a very specific law which we will present in the coming days" that will regulate the sale of such content, Spain's Consumer Affairs Minister Alberto Garzon told Radiocable.

"It is like gambling... because it involves compulsive consumption behaviour which provokes a series of issues for players, from stress to financial bankruptcy," he told the independent radio station.

"At the end of the day, these are sums which pile up and can lead to gambling addiction," Garzon said.

Such features were aimed above all "at the under-18 age group, where in 2021, up to 30 percent admitted they had paid significant amounts of money to obtain such rewards" within a game, he said, citing health ministry statistics.

The age ratings for such games "don't take into account the danger posed by this feature, so parents could buy a game for a 13-year-old, for example, without being aware it includes an element which, in real life, could not be bought by anyone under 18," he explained.

European consumer groups want tighter regulation of the extremely lucrative video games industry
European consumer groups want tighter regulation of the extremely lucrative video games industry AFP / Mark RALSTON

In April, PEGI, the European body that issues age ratings for video games, introduced a labelling change that requires gaming companies to say if a game includes "paid random items" -- a form of optional in-game purchases.

Many other countries have also been struggling with the controversial question of "loot boxes" although few have taken steps to regulate them.

On Tuesday, 20 European consumer groups threw their weight behind a Norwegian Consumer Council (NCC) report on loot boxes that described them as "exploitative and predatory", with the groups demanding better regulation of the video game industry.

"The sale and presentation of loot boxes often involve exploiting consumers through predatory mechanisms, fostering addiction, targeting vulnerable consumer groups and more," the NCC's head of digital policy Finn Myrstad said in a statement.

Gaming companies often used "highly problematic practises to increase their own revenue" through features that "manipulate consumers to spend large sums of money through aggressive marketing, exploitation of cognitive biases, and misleading probabilities", the report found.

In Europe, only Belgium and the Netherlands have banned loot boxes after directly associating them with gambling.

In a statement issued in response to the government's move, the Spanish Association of Video Games (AEVI) said it "rejects any association with gambling" and insisted on the sector's right to "self-regulation".