Google announced they have enabled their lightbox ads to work across all screen sizes, from desktop, to tablet, to mobile phones.
The new Lightbox ads are now available for all AdWords advertisers globally and work across all devices. Google said:
With Lightbox ads, it's easy to use existing creative assets to create beautiful, engaging ads that look great on any screen size. These ads pull assets from your YouTube channel, can use uploaded images, or your Google Maps listings to build full screen experiences within a standard Interactive Advertising Bureau (IAB) ad size. The ability to integrate content from other Google products - like Shopping listings, G+ pages - is coming soon. Because these ads are built in HTML5, using responsive design, the assets dynamically fill the publisher site, mobile app, screen, or device -- desktop and mobile.
Here is a video demonstrating how they render:
So if you see these new ad formats pop up on your site, you know why.
Forum discussion at Google+.
