Getty Images
Now playing
03:05
WHO: People can get addicted to video games (2018)
CNN
Now playing
05:40
Unprecedented footage shows front line of Ukrainian conflict with Russia
5995404 02.09.2019 Iranian Foreign Minister Mohammad Javad Zarif attends a news conference following his meeting with his Russian counterpart Minister Sergei Lavrov, in Moscow, Russia. Iliya Pitalev / Sputnik  via AP
Iliya Pitalev/SPTNK/Sputnik via AP
5995404 02.09.2019 Iranian Foreign Minister Mohammad Javad Zarif attends a news conference following his meeting with his Russian counterpart Minister Sergei Lavrov, in Moscow, Russia. Iliya Pitalev / Sputnik via AP
Now playing
04:09
Iran accuses Israel of sabotaging nuclear site, vows revenge
Ash rises into the air as La Soufriere volcano erupts on the eastern Caribbean island of St. Vincent, seen from Chateaubelair, Friday, April 9, 2021. (AP Photo/Orvil Samuel)
Orvil Samuel/AP
Ash rises into the air as La Soufriere volcano erupts on the eastern Caribbean island of St. Vincent, seen from Chateaubelair, Friday, April 9, 2021. (AP Photo/Orvil Samuel)
Now playing
01:08
See the looming clouds of ash over La Soufrière volcano
screengrab Vanuatu villagers mourn philip
Reuters
screengrab Vanuatu villagers mourn philip
Now playing
02:03
Remote tribe worships Prince Philip as god, mourns his death
ITN
Now playing
01:15
Prince Charles speaks following Prince Philip's death
LONDON, UNITED KINGDOM - APRIL 10: The Honourable Artillery Company fire a gun salute at The Tower of London on April 10, 2021 in London, United Kingdom.  The Death Gun Salute will be fired at 1200 marking the death of His Royal Highness, The Prince Philip, Duke of Edinburgh. Across the country and the globe saluting batteries will fire 41 rounds, 1 round at the start of each minute, for 40 minutes. Gun salutes are customarily fired, both on land and at sea, as a sign of respect or welcome. The Chief of the Defence Staff, General Sir Nicholas Carter, said "His Royal Highness has been a great friend, inspiration and role model for the Armed Forces and he will be sorely missed." (Photo by Chris Jackson/Getty Images)
Chris Jackson/Getty Images
LONDON, UNITED KINGDOM - APRIL 10: The Honourable Artillery Company fire a gun salute at The Tower of London on April 10, 2021 in London, United Kingdom. The Death Gun Salute will be fired at 1200 marking the death of His Royal Highness, The Prince Philip, Duke of Edinburgh. Across the country and the globe saluting batteries will fire 41 rounds, 1 round at the start of each minute, for 40 minutes. Gun salutes are customarily fired, both on land and at sea, as a sign of respect or welcome. The Chief of the Defence Staff, General Sir Nicholas Carter, said "His Royal Highness has been a great friend, inspiration and role model for the Armed Forces and he will be sorely missed." (Photo by Chris Jackson/Getty Images)
Now playing
02:03
Prince Philip tributes pour in from around the world
CNN Weather
Now playing
01:35
Powerful Tropical Cyclone Seroja takes aim at Western Australia
People view flowers left in front of the gate at Buckingham Palace in London, after the announcement of the death of Britain's Prince Philip, Friday, April 9, 2021. Buckingham Palace officials say Prince Philip, the husband of Queen Elizabeth II, has died. He was 99. Philip spent a month in hospital earlier this year before being released on March 16 to return to Windsor Castle.
Matt Dunham/AP
People view flowers left in front of the gate at Buckingham Palace in London, after the announcement of the death of Britain's Prince Philip, Friday, April 9, 2021. Buckingham Palace officials say Prince Philip, the husband of Queen Elizabeth II, has died. He was 99. Philip spent a month in hospital earlier this year before being released on March 16 to return to Windsor Castle.
Now playing
01:54
Tributes to Prince Philip pour in from around the world
Britain's Prince Philip, Duke of Edinburgh, in his role as Captain General, Royal Marines, attends a Parade to mark the finale of the 1664 Global Challenge on the Buckingham Palace Forecourt in central London on August 2, 2017.  
After a lifetime of public service by the side of his wife Queen Elizabeth II, Prince Philip finally retires on August 2, 2017,at the age of 96. The Duke of Edinburgh attended a parade of Royal Marines at Buckingham Palace, the last of 22,219 solo public engagements since she ascended to the throne in 1952.
 / AFP PHOTO / POOL / HANNAH MCKAY        (Photo credit should read HANNAH MCKAY/AFP/Getty Images)
HANNAH MCKAY/AFP/Getty Images
Britain's Prince Philip, Duke of Edinburgh, in his role as Captain General, Royal Marines, attends a Parade to mark the finale of the 1664 Global Challenge on the Buckingham Palace Forecourt in central London on August 2, 2017. After a lifetime of public service by the side of his wife Queen Elizabeth II, Prince Philip finally retires on August 2, 2017,at the age of 96. The Duke of Edinburgh attended a parade of Royal Marines at Buckingham Palace, the last of 22,219 solo public engagements since she ascended to the throne in 1952. / AFP PHOTO / POOL / HANNAH MCKAY (Photo credit should read HANNAH MCKAY/AFP/Getty Images)
Now playing
01:39
The life of Prince Philip, Duke of Edinburgh
screengrab myanmar ambassador to UK
CNN
screengrab myanmar ambassador to UK
Now playing
01:02
Video shows Myanmar's ambassador 'locked out' of embassy
King Abdullah II of Jordan and his half brother, former crown prince Hamzah bin Al Hussein
AFP/Getty Images
King Abdullah II of Jordan and his half brother, former crown prince Hamzah bin Al Hussein
Now playing
02:39
Jordan's King breaks silence about family fallout
CNN
Now playing
06:13
Inside Iraq's crippling crystal meth crisis
Now playing
05:27
Myanmar special envoy: It is time for the world to stop another genocide
Navalny tea
Life.RU
Navalny tea
Now playing
02:44
Videos show Putin critic inside prison
Norwegian Coastal Administration
Now playing
00:34
Video shows dramatic crew rescue after ship lost power during storm
(CNN) —  

China has announced a curfew on online gaming for minors among new measures aimed at curbing video game addiction.

The official government guidelines will be applied to all online gaming platforms operating in the country, mostly notably Tencent, the world’s biggest gaming company.

Under the new rules, gamers aged under 18 will be banned from playing online games between 10 p.m. and 8 a.m. On weekdays, minors can only play for 90 minutes, while they may play up to three hours per day on weekends and public holidays.

The guidelines also place restrictions on the amount of money minors can transfer to their online gaming accounts. Gamers aged between eight and 16 years old can only top up 200 yuan ($29) per month, while the maximum amount for those between 16 and 18 will be 400 yuan ($57).

China is the world’s largest gaming market, accounting for a quarter of global revenue, according to market research firm Newzoo. It expected China’s total gaming revenue to reach $38 billion in 2018.

The document was issued by China’s General Administration of Press and Publication on Tuesday.

China is the world's largest gaming market, with an expected total gaming revenue of $38 billion in 2018.
Ivan Abreu/Getty Images AsiaPac/Getty Images for Hong Kong Touri
China is the world's largest gaming market, with an expected total gaming revenue of $38 billion in 2018.

Speaking to the state-run Xinhua News Agency, a spokesman for the administration said the new rules were aimed at creating a “clear internet space” and “protecting the physical and mental health of minors.”

“(This notice) has emphasized on the responsibility of the corporations, and has executed the government’s duty to supervise the problem,” the spokesman said.

He said that government units would be required to study the rules and ensure corporations abide by the requirements.

The administration is also working with police to set up a real-name registration system, and to enable gaming companies to check the identity of their users against the national database, he added.

The new guidelines are China’s latest move in an ongoing campaign to increase regulation of the gaming industry.

In August 2018, Beijing announced plans to limit the number of new online games to “reduce nearsightedness in children and adolescents.” It also criticized a popular mobile game, “Honor of Kings“, for allegedly causing addiction in young people in 2017.

Addiction to gaming, known officially as Internet Gaming Disorder (IGD), was added to the World Health Organization’s International Classification of Diseases for the first time in June 2018.

IGD is diagnosed when an online gamer plays compulsively to the exclusion of other interests, including school and family life.

A 2018 study carried out by researchers at the Shanghai Jiao Tong University School of Medicine showed that men may be more susceptible to gaming addiction.

CNN’s Sherisse Pham contributed to this report