Details in Valve Games
Barnacles digest food and spit it out after some time.
Cockroaches eat nearby corpses.
Guards react to smells like corpses when near them.
Houndeyes wake up quickly after loud sounds.
Normal.
Loud.
You can distract a Bullsquid with the freezer's meat.
Seagulls keep pooping on your car after you leave it.
When killing a Metrocop, a signal is triggered that alerts others.
Setting them on fire seems to destroy the device that makes the noise.
Alyx reacts to you pointing your flashlight at her.
This even works with hunters.
In episode 1, a projector shows the original video its projecting.
The game doesn't let you in a raided apartment, but you can still find a body.
Microphones amplify the player's voice.
At first, survivors don't know what to call the infected.
They later decide on what to call them.
A rare animation shows chargers using low ceilings.
Your distance form survivors affects how you call their names.
The lower your health, the worse you do in a carnival strength game.
Adrenaline will give you more strength.
The stasis chamber furniture is bolted down for when it moves.
Wheatley is too dumb to understand a Paradox, a question without answers.
Turrets understand the paradox and start frying because they can't answer.
A meeting room's projector screen has aperture's logo burnt into it.
Wheatley's deadly flashlight' story might be true.
Later in the game, a dying core can be seen with its flash light on.
When talking to Larry, dialogue is muffled when covering your mouth.
Mouth not covered.
Mouth covered.
If you're wearing a hat like him, Larry comments on it.
Oh and nice helmet by the way.
In chapter 8, Russel comments on you bringing Vodka from chapter.
No bottles.
One bottle.
Two Bottles.
Combine will react to you touching things in an elevator.
Touching soldiers.
Touching buttons.
You crush cans by squeezing Valve Index's controller.
Objects dipped into hot water wills team when removed.
At the end, the rim of Freeman's glasses can be seen on screen.
You see it better without VR.
The SMG's laser sight has a hidden detail.
This is the dictionary definition of the word detail.