The horrifying void between dimensions in Portal 2

Portal 2

Science has gone too far. One minute you're enjoying a spot of light testing, the next you're trapped in the infinite, unknowable void between dimensions, outside of space and time itself, staring at the side of your own head through a kaleidoscope. It's remarkable no one has tried it before.

Portal timelines, Chell is lost in the orange and blue folds of the fabric of reality. What a way to go.