As seen in the trailer above, the app only needs to take a photo of your face and record a few seconds of audio before it presents you with a wild, demonic version of your visage and voice. We're not sure when that knowledge would ever come in handy, but you never know, right?
The Insanity Mirror app is currently unavailable outside the U.K.; we've reached out to Ubisoft to ask if it's coming stateside.
Far Cry 3 launches Dec. 4 on Windows PC, Xbox 360 and PlayStation 3.
Update: A Ubisoft representative told Polygon that the Insanity Mirror app will remain exclusive to the U.K., and said that an Android version will be released there soon.