Aperture Science's Impossible Geometry Test

whatthechell:

Turret PC case mod @ Gamescom 2012 - Imgur

A Portal turret goes skydiving! by almeister112

whatthechell:

Here’s an interesting fact: they’re not filled with real air. It’s too expensive to pump into so many of them. We just take carbon dioxide out of a turret, freshen it up a little, and pump it back in. I thought that was interesting.

source.

almoyan:

Turret Aspiration