This year’s Cyber Monday was the biggest sales day for online and for mobile ever in the US. Online sales brought in $6.59 billion in total, while sales on mobile broke a new record by reaching $2 billion. Mobile also dominated over desktop for the first time for Shopify merchants, which include brands as varied as Tesla Motors and Kylie Cosmetics, according to the company.

Part of this is because retailer apps and mobile wallet services have made it easier than ever to shop on your iPhone or Android device, Business Insider reports. Seventy-five percent of millennials were more likely to shop on their smartphones than on computers, according to Adobe Analytics data.

The top-selling items of Cyber Monday included Google Chromecasts, Roku devices, Apple iPads, Samsung Tablets, Apple AirPods, and Sony PlayStation VR headset core systems. Super Mario Odyssey was the best-selling video game, and the Nintendo Switch and Xbox One X were the most popular consoles.

While Amazon kept actual numbers out of its post-Cyber Monday press statement, it did say that it sold millions of Alexa-enabled devices over the long weekend and that the Echo Spot has sold out, while the Echo Dot performed the best at Whole Foods stores in the US.

Cyber Monday’s online sales numbers are second only to Alibaba’s Singles Day’s numbers mainly in China. The festival-driven holiday invented by Alibaba falls on November 11th, and it raked in $25.3 billion this year, which is bigger than Black Friday and Cyber Monday combined.