Pocket ravens were infected with an unknown virus and are now attacking civilians. Scientists quickly created a special application "Pocket Raven GO" with built-in radar, to detect aggressive black birds. In your arsenal there are red and green balls, with their help you can either destroy the raven or heal it. Your indicator of humanity varies depending on your actions. Go through the streets of your city or village and aim at the camera of your smartphone. When the radar detects a crow, throw green or red balls at it. Be careful! - the raven will attack you! Staying on the good side or becoming evil? - choose!