Much like any video game, the Portal series contains a large amount of unused content that was cut from development due to a series of reasons. Below is a list of items and other unique mechanics that were unfortunate enough to be put on the chopping block.
Portal 2
Characters
Mechanics
Pneumatic Diversity Vent
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This type of mechanic was first introduced in a demo of the same name, displaying its abilities to pull objects at a high force. This mechanic was cut from the game during the later stages for unknown reasons.
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Sticky Gel
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This mechanic was mentioned to allow players to stick to to wherever the gel was placed. It was cut from the game when play-testers complained of motion sickness.
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Gallery