I don't get it, which app. It says minesweeper, where are the mines? Is this like the minesweeper starter app, did they feel interstitials were so loved on the web that they wanted to give people more of them?
Also, don't they have any designers at MS or is mis-alignment the new grid? Or perhaps there's some cunning reason [other than making it stand out more in the most annoying fashion] that the advert should not adhere to the grid of the rest of the content.