Three of the UK's leading video games developers are to display coronavirus safety advice within their titles.
Candy Crush Saga, Dirt Rally 2.0 and Sniper Elite 4 are among the games that will feature the messaging.
The initial ads will focus on the theme: "Stay home. Save lives."
Rebellion - one of the companies involved - also publishes 2000AD among other comics, and has also offered space in these for the government's campaign.
"I reached out to DCMS [Department for Digital, Culture, Media and Sport] a few days ago to say is there anything we can do," Jason Kingsley, chief executive of Rebellion and chair of the games trade body Tiga told the BBC.
"A lot of people spend hundreds of hours in computer games.
"And in this case, we thought we could help society by reminding people of their obligations to others."
The inclusion of Codemasters' off-road racing game Dirt Rally 2.0 comes a day before it is included in Sony's latest PlayStation Plus package. This should give it a high profile over coming weeks, and ensure many thousands of subscribers see the in-game ads despite the title being more than a year old.
Likewise, Activision Blizzard's London-based division, King, predicts millions of gamers will see the ads within its mobile games, which include Farm Heroes Saga in addition to Candy Crush. The firm has also donated 230 digital advertising screens it had booked, to carry coronavirus-related information.
The games creators will feature the promotions in different ways.
In Rebellion's case, it will display the message on a screen shown before gameplay begins within its Strange Brigade and Sniper Elite titles. It normally uses the launcher pages to promote its other wares. In the case of PC gamers, the pages will also contain a link to a website containing further advice about the virus.
By contrast, Codemasters will take advantage of the fact it has built in the ability to display ads within the action itself, which it can remotely update. The tech for this is supplied by the London-based start-up Bidstack.
"We realised that technology within our games, which enables the remote updating of banners within the virtual environment, could be repurposed to assist with the coronavirus communication effort," Codemasters' business development chief Toby Evan-Jones explained.
"Reaching out to our contacts at the civil service was met with nothing but support."
In the case of Dirt Rally, players will see the advice on the roadside banners they race past.
Because the technology is geo-targeted, the messages will be restricted to UK-based gamers. But Codemasters says it hopes to extend the initiative to other European and American players soon with localised public safety information.
"As this is a global pandemic, we have prepared localised variants of the asset in French, Italian, German and Spanish - the predominant languages for those within our community whose authorities are advising self-isolation," added Mr Evan-Jones.
DCMS is now inviting the UK's other 2,000-plus games companies to join the effort.