To play, you'll need a mirror, a dimly lit room, and a willingness to scream (just kidding, or are you?). Stand in front of the mirror, say "Bloody Mary" three times, and spin around. Some people claim you need to do it at midnight, but we won't judge if you want to try it at 3 pm instead. The goal is to summon Bloody Mary's ghost, but be warned: she's not always a friendly spirit!
The gameplay is all about building tension and creeping yourself out. You'll be standing there, staring at your reflection, waiting for something to happen. Will Bloody Mary appear, or will you just look silly in front of the mirror? The uncertainty is all part of the fun, and it's what makes the game so addictive.