Mechanics

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Testing mechanics are what make up the meat of the puzzles in the Portal series. The different devices, structures, cubes, gels, and hazards are placed strategically around the test chambers.

Devices

Structures

Cubes

Main article: Cubes

Buttons

Gels

Main article: Gels

Hazards

Tubes

Main article: Tubes

Scrapped

Main article: Unused content