Parks and other public places that were once empty and devoid of human life are now filled with crowds of millennials staring at their phones. The perplexing phenomenon is actually being caused by a surge in popularity of a new video game called Pokemon Go. It's basically a mashup of geocaching and the classic Pokemon card game. Users have to travel to different locations marked on a map to catch Pokemon. The addicting cell phone app is available for download in the Apple App Store and in the Google Play Store.