Contraption Cube Receptacle
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|Contraption Cube Receptacle|
Contraption Cube receptacle
The Contraption Cube Receptacle is a testing element featured in the Educational Version of Portal 2.
Appearing only in the Puzzle Maker, the receptacle seems to be designed specifically for the Contraption Cube. Even though, it neither recognizes the cube, nor activates other testing elements connected to it. Due to a lightning bug, it appears completely black in-game, and its true texture can only be seen in a model viewer.
 List of appearances
- Perpetual Testing Initiative (Educational Version only)