Hoping to get you into the Halloween mood, Google+ has introduced a new effect for photos. Google calls it "Halloweenifying" your images and it takes a few minutes to get this done. You just need to open Photos app on your device, tap on the three star button in the top right corner and select "Spooky effect." Wait a few seconds and then you have a scary version of yourself ready to share on your social networks.
Source: Droid Life