Microsoft fans have erupted in rage over the tech giant's decision to radically alter the classic games Solitaire and Minesweeper.
These two games used to be totally free, allowing lazy folk to wile away their working days.
But with the release of Windows 10, these two games are no longer as free as they used to be.
Now called Microsoft Solitaire Collection Premium Edition, the classic game ships with the operating system, but is marred by advertising.
Anyone who wants to remove the "intrusive" corporate messages needs to take out a subscription which reportedly costs $10 a year, or $1.50 a month.
Minesweeper must be downloaded separately and also requires a payment to remove ads.
Mark Hachman, senior editor at PC World, is unhappy about the charges.
"Honestly, if you want to pay for more energy in Farmville or an upgraded weapon in some online shooter, it’s your business," he roared.
"But it does seem a bit odd that Microsoft can make Windows 10—an entire operating system, mind you—a free upgrade, while asking you to pay to remove ads.
"If this is the future of Windows as a service, count me out."
On Twitter, fans raged about the changes.
Windows 8 users were also asked to pay to remove adverts in Solitaire, which did not come preinstalled.
Fans were delighted to see Windows 10 ship with Solitaire already installed, but had their hopes dashed when Microsoft asked them to pay to remove the ads.
In a statement, Microsoft said: "Microsoft Solitaire has been free to play for the past 25 years on Windows, and continues to be free to play on Windows 10. Users can access and play everything within the game for free, including new Premium features like Daily Challenges and Star Club.
"The Microsoft Solitaire Collection game experience and Premium Upgrade features such as Double Coins for Daily Challenges, and removal of advertisements, is identical to the Windows 8 version that has been available for years.”