Play Stacker game from Friv 2018 for free. Stacker is an online Friv Action games which you can play for free here on Friv games! Your role is to go through every challenge Stacker have prepared for you! Some may require friv bit of attention or fast reflexes, but with practice, you can become friv master friv no time! Put friv your scary costume, and let's see what you've got!