Punch-in-a-box, or sometimes referred to as a punch box or just box, is a power up in the game Fun Run. The punch-in-a-box can be left behind by the player while the player is running and it will remain there for the remainder of the game session. When a player comes into contact with the punch-in-a-box, the player will be punched backwards. This does not kill the player, but only moves them backward across the map. Anyone can be punched, including the player who left it, unless they have a heart or a shield.