8. Angry Birds
One of the most recognized games for mobile devices, Angry Birds features a cast of feathered creatures (dressed in an assortment of costumes depending on the theme) that users fling at the birds' pig enemies with the swipe of a finger. The subject of multiple spinoffs, including space and Star Wars editions, this game has been responsible for hours of time spent staring at a screen trying to use logic and force to successfully complete each level -- which is time not spent doing work, Dale said.
"Organizations can be thinking there's going to be a lot of time spent playing Angry Birds [instead of working]," Dale said. "If the device is provided by the company, they are very interested in how to maximize ROI and ensure it is being used for its intended purpose."