[Rangel(kf7fdb)]

Something that stood out to me was the recycling bin and the fact that safe zones were not mentioned as a game change. Have safe zones always been in the games because it seems like it is something that became popular in mostly the recent games except for 2014? If I had to go on a long shot, I would guess a version of stack attack but with safe zones so that stacking is actually the goal of the game.