The Box Dimension is a dimension composed entirely of cardboard boxes. It has a low gravity environment, which causes lightweight objects to float, such as boxes, plants, and snowballs. The Box Dimension also serves as a gateway to other dimensions through its many box portals.
While only a portion can be seen as a room, the Box Dimension is incredibly vast, and the full scope of it is currently unknown. The very top and bottom of the dimension are clouded in a purple mist, which appears to be impassable (Although in Puffle Launch, Elite Puffle Blast is seen to be able to go right through it). The dimension itself can only be accessed by a portal, which can be in the form of the Portal Box furniture item or through portals at parties.
- During the April Fools' Party 2017, Rookie accidentally opened portals to other dimensions. There were portals on each side of the entryway, with four on the left and three on the right, each transporting players to a different dimension. The large box in the center was blocked off, and players was required to wear the Box Costume to be able to enter.
- During the Puffle Party 2018, the Box Dimension was the domain of the Orange Puffles. The room was decorated with orange balloons, streamers, and a big pile of cookies in the middle.
- After the Island Adventure Party: Rockhopper's Quest was over, most of the plants used in the party were stored here.
- It was mentioned in Issue 26 in the Club Penguin Times.
- An Orange Puffle named Plok can occasionally be seen floating through it.
- If you have a Portal Box in your igloo you can access the box dimension at any time.