The Metal Gear series has always been a great example of attention to detail. Metal Gear Solid 2 was one of the first games to have breakable watermelons and meltable ice. Metal Gear Solid V: The Phantom Pain takes it to a new realm of impressiveness.
Next time you play The Phantom Pain, look out for these details:
You can use your cassette player to play "Recorded on the Toilet" while in a porta potty to prevent soldiers from looking inside.
If Big Boss is bloody from combat or exhausted from multiple days of deployment, he gets an IV while sitting in the ACC helicopter.
It's possible to hijack a Jeep by creeping up behind it on D-Horse. You can also mount the D-Horse while running for quick escape.
Soldiers try to counter your strategies on later deployments by using night vision if you regularly deploy at night, wear helmets if you get a lot of head shots, and equip gas masks if you enjoy using chemical grenades.
While bloody Big Boss' mental state is affected, lowering the duration of reflex mode.
Blood on Big Boss won't be removed until he either takes a shower, or walks in rain.
If you don't shower for a long duration of time, NPCs will mention how much you stink. Ocelot and soldiers at Mother Base will even throw bucket water on you. Eventually, Quiet will shower with you.
Soldiers will attempt to take you out with a knife if you hold them up for too long.
As you kill people or research nuclear weapons, the horn-looking shrapnel on Big Boss' head grows larger.
You can CQC enemies into walls to incapacitate them for a longer duration of time.
Soldiers will notice foot prints in mud or water trails from puddles.
Power lines can be shot during rain to zap enemies below.
Hanging for a while will result in Big Boss shaking his non-prosthetic arm to increase blood flow.
Enemies can be blinded with a gun-mounted flashlight.
If you stare at Quiet's breasts, she will turn her head and look at you. If you continue to stare at her, then she will flirt with you.
Moving helicopter blades will dissipate smoke from a smoke grenade. So, you can call in a support helicopter to clear smoked areas.
Reloading on a loaded weapon with a full magazine will give you +1, the bullet in the chamber.
Trucks will transport you to the address on your cardboard box if you use it while on the back of a truck.
If an incapacitated enemy has their head submerged in water, then they will eventually drown.
Enemies that spot a Fulton before ascension can shoot the parachute to relieve the ally.
D-Dog will bark at any supply crates that you drop near him.
Supply crate drops can incapacitate enemies that they land on.
You can hear the noise of shell casings landing on the floor. What material they land on affects the sound.
Head equipment on soldiers will fly off when the Fulton launches them into the sky.
You can use a soldier sticker on the cardboard box to make soldiers salute you.
10 Weird Story Elements in Metal Gear Solid
Top 10 Wierd and Outrageous Story Elements in the Metal Gear Solid Series