Newsbrief: Facebook today launched native mobile video ads for apps. If you're interested in implementing them into your game, you can download the latest SDK for iOS or Android and get started immediately.
There's more information on the new formats these ads take, and links to the downloads, over at Facebook's official blog post on the update.
If you want to, conversely, advertise your game using mobile ads, you can use the company's LiveRail service. The company updated that tool in March, during its F8 conference.