In mere four weeks of launch, Microsoft’s newest OS iteration dubbed Windows 10 has been installed on more than 75 million devices worldwide.

A whopping 14 million machines had upgraded to the new operating system within just 24 hours. In comparison, Windows 8 was installed on around 40 million devices within the first month, while Windows 7 hit 90 million sales after eight months of launch.

It was Yusuf Mehdi, corporate vice president of Microsoft’s Windows and Devices Group, who took to micro blogging website Twitter to announce the milestone on Wednesday.

More than 75 million devices now run the software, with the number “growing every day,” Mehdi tweeted.

Mehdi also shared on Twitter that more than 90,000 unique PCs or tablet models have been upgraded to Windows 10 in 192 countries worldwide and that more than 122 years of gameplay have streamed from Xbox One to Windows 10 devices.

He also revealed that the Windows Store for Windows 10 has seen six times more downloads per device than Windows 8 and Microsoft’s digital assistant Cortana has told half a million jokes since launch.

Redmond began rolling out Windows 10 to Windows 7, 8 and 8.1 users as a free upgrade for consumers and some business customers on July 29. The tech giant continues to roll out the free Windows 10 upgrade in waves.

The company aims to see Windows 10 installed on 1 billion devices by 2018.