This breakdown of graphical tricks in Half-Life and more is an incredible peek behind the curtain

"Fake motion blur," a "classic fake reflection," and more ...

'A classic fake reflection where it's just the same room under a glass floor': I no longer trust my senses after reading this gamedev thread breaking down cost-effective ...

He goes into all sorts of effects in the thread, like a "classic fake reflection" from Half-Life: Blue Shift "where it's just ...