Only on PC: Get your very own cute and cuddly Companion Cube pet in Terraria’s 1.3.1 update. Learn about it here with info on even more Portal Easter eggs. The Portal secrets of Terraria run deep.

The Enrichment Center likely disapproves of the SoundCube: a portal music box in the form of a Portal Companion Cube. [Andreas] finished this project a couple of years ago, but we’re glad he’s finally ...

[Michael Gainer] is a big fan of Portal, and it shows in the Weighted Companion Cube he made. [Michael] hand-machined the many pieces that comprise the Cube’s body and medallions out of 6061 aluminum.

It’s always nice to see a friendly face. As mentioned above, there’s only one test chamber in Portal 2 that features the Weighted Companion Cube. To unlock the achievement and hear the secret GLaDOS ...

In this testchamber, you'll need to carry the weighted storage (companion) cube with you from beginning to end. The first challenge drives home the point, forcing you to place the companion cube on ...